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647 results on '"Vissers, M."'

1. In-Flight Performance of Spider's 280 GHz Receivers

Author

Shaw, Elle C., Ade, P. A. R., Akers, S., Amiri, M., Austermann, J., Beall, J., Becker, D. T., Benton, S. J., Bergman, A. S., Bock, J. J., Bond, J. R., Bryan, S. A., Chiang, H. C., Contaldi, C. R., Domagalski, R. S., Doré, O., Duff, S. M., Duivenvoorden, A. J., Eriksen, H. K., Farhang, M., Filippini, J. P., Fissel, L. M., Fraisse, A. A., Freese, K., Galloway, M., Gambrel, A. E., Gandilo, N. N., Ganga, K., Gibbs, S. M., Gourapura, S., Grigorian, A., Gualtieri, R., Gudmundsson, J. E., Halpern, M., Hartley, J., Hasselfield, M., Hilton, G., Holmes, W., Hristov, V. V., Huang, Z., Hubmayr, J., Irwin, K. D., Jones, W. C., Kahn, A., Kermish, Z. D., King, C., Kuo, C. L., Lennox, A. R., Leung, J. S. -Y., Li, S., Luu, T. V., Mason, P. V., May, J., Megerian, K., Moncelsi, L., Morford, T. A., Nagy, J. M., Nie, R., Netterfield, C. B., Nolta, M., Osherson, B., Padilla, I. L., Rahlin, A. S., Redmond, S., Reintsema, C., Romualdez, L. J., Ruhl, J. E., Runyan, M. C., Shariff, J. A., Shiu, C., Soler, J. D., Song, X., Tartakovsky, S., Thommesen, H., Trangsrud, A., Tucker, C., Tucker, R. S., Turner, A. D., Ullom, J., van der List, J. F., Van Lanen, J., Vissers, M. R., Weber, A. C., Wehus, I. K., Wen, S., Wiebe, D. V., and Young, E. Y.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

SPIDER is a balloon-borne instrument designed to map the cosmic microwave background at degree-angular scales in the presence of Galactic foregrounds. SPIDER has mapped a large sky area in the Southern Hemisphere using more than 2000 transition-edge sensors (TESs) during two NASA Long Duration Balloon flights above the Antarctic continent. During its first flight in January 2015, SPIDER observed in the 95 GHz and 150 GHz frequency bands, setting constraints on the B-mode signature of primordial gravitational waves. Its second flight in the 2022-23 season added new receivers at 280 GHz, each using an array of TESs coupled to the sky through feedhorns formed from stacks of silicon wafers. These receivers are optimized to produce deep maps of polarized Galactic dust emission over a large sky area, providing a unique data set with lasting value to the field. In this work, we describe the instrument's performance during SPIDER's second flight., Comment: Submitted to SPIE Astronomical Telescopes + Instrumentation 2024, JATIS

Published
2024

2. Characterization of NbTiN films with thicknesses below 20 nm for low power kinetic inductance amplifiers

Author

Giachero, A., Vissers, M. R., Wheeler, J. D., Malnou, M., Austermann, J. E., Hubmayr, J., Nucciotti, A., Ullom, J. N., and Gao, J.

Subjects
Condensed Matter - Superconductivity
Abstract

A quantum-limited amplification chain is a fundamental advantage for any application that may benefit from the detection of very faint signals. Reading out arrays of superconducting detectors (TESs or MKIDs), resonant cavities, or qubits, calls for large bandwidth amplifiers in addition to having the lowest possible noise. At millikelvin temperatures, Kinetic Inductance Traveling-Wave Parametric Amplifiers (KI-TWPAs) working in 3-wave-mixing (3WM) and fabricated from a 20 nm thick NbTiN film have shown promising noise performances, as they can operate close to the quantum limit. However, they still require fairly high pump power. Devices that would require lower pump power would be easier to implement in readout chains, could reach the quantum limit and they would be compatible with qubit readout. A possible solution for obtaining this optimal configuration is to use a thinner superconducting film. In this work we explore the properties of NbTiN films with a thickness less than 20 nm and we report the obtained experimental characterizations in terms of critical temperature, normal resistivity, and kinetic inductance. A new design for a 3WM KI-TWPA amplifier, based on these developed superconducting films, is introduced and discussed.

Published
2024
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6. Improved microwave SQUID multiplexer readout using a kinetic-inductance traveling-wave parametric amplifier

Author

Malnou, M., Mates, J. A. B., Vissers, M. R., Vale, L. R., Schmidt, D. R., Bennett, D. A., Gao, J., and Ullom, J. N.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Quantum Physics
Abstract

We report on the use of a kinetic-inductance traveling-wave parametric amplifier (KITWPA) as the first amplifier in the readout chain of a microwave superconducting quantum interference device (SQUID) multiplexer (umux). This umux is designed to multiplex signals from arrays of low temperature detectors such as superconducting transition-edge sensor microcalorimeters. When modulated with a periodic flux-ramp to linearize the SQUID response, the flux noise improves, on average, from $1.6$ $\mu\Phi_0/\sqrt{\mathrm{Hz}}$ with the KITWPA off, to $0.77$ $\mu\Phi_0/\sqrt{\mathrm{Hz}}$ with the KITWPA on. When statically biasing the umux to the maximally flux-sensitive point, the flux noise drops from $0.45$ $\mu\Phi_0/\sqrt{\mathrm{Hz}}$ to $0.2$ $\mu\Phi_0/\sqrt{\mathrm{Hz}}$. We validate this new readout scheme by coupling a transition-edge sensor microcalorimeter to the umux and detecting background radiation. The combination of umux and KITWPA provides a variety of new capabilities including improved detector sensitivity and more efficient bandwidth utilization.

Published
2023
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7. G4CMP: Condensed Matter Physics Simulation Using the Geant4 Toolkit

Author

Kelsey, M. H., Agnese, R., Alam, Y. F., Langroudy, I. Ataee, Azadbakht, E., Brandt, D., Bunker, R., Cabrera, B., Chang, Y. -Y., Coombes, H., Cormier, R. M., Diamond, M. D., Edwards, E. R., Figueroa-Feliciano, E., Gao, J., Harrington, P. M., Hong, Z., Hui, M., Kurinsky, N. A., Lawrence, R. E., Loer, B., Masten, M. G., Michaud, E., Michielin, E., Miller, J., Novati, V., Oblath, N. S., Orrell, J. L., Perry, W. L., Redl, P., Reynolds, T., Saab, T., Sadoulet, B., Serniak, K., Singh, J., Speaks, Z., Stanford, C., Stevens, J. R., Strube, J., Toback, D., Ullom, J. N., VanDevender, B. A., Vissers, M. R., Wilson, M. J., Wilson, J. S., Zatschler, B., and Zatschler, S.

Subjects
High Energy Physics - Experiment, Quantum Physics
Abstract

G4CMP simulates phonon and charge transport in cryogenic semiconductor crystals using the Geant4 toolkit. The transport code is capable of simulating the propagation of acoustic phonons as well as electron and hole charge carriers. Processes for anisotropic phonon propagation, oblique charge-carrier propagation, and phonon emission by accelerated charge carriers are included. The simulation reproduces theoretical predictions and experimental observations such as phonon caustics, heat-pulse propagation times, and mean charge-carrier drift velocities. In addition to presenting the physics and features supported by G4CMP, this report outlines example applications from the dark matter and quantum information science communities. These communities are applying G4CMP to model and design devices for which the energy transported by phonons and charge carriers is germane to the performance of superconducting instruments and circuits placed on silicon and germanium substrates. The G4CMP package is available to download from GitHub: github.com/kelseymh/G4CMP., Comment: 21 pages, 11 figures, 10 tables

Published
2023
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8. Performance of a Kinetic-Inductance Traveling-Wave Parametric Amplifier at 4 Kelvin: Toward an Alternative to Semiconductor Amplifiers

Author

Malnou, M., Aumentado, J., Vissers, M. R., Wheeler, J. D., Hubmayr, J., Ullom, J. N., and Gao, J.

Subjects
Quantum Physics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

Most microwave readout architectures in quantum computing or sensing rely on a semiconductor amplifier at 4 K, typically a high-electron mobility transistor (HEMT). Despite its remarkable noise performance, a conventional HEMT dissipates several milliwatts of power, posing a practical challenge to scale up the number of qubits or sensors addressed in these architectures. As an alternative, we present an amplification chain consisting of a kinetic-inductance traveling-wave parametric amplifier (KI-TWPA) placed at 4 K, followed by a HEMT placed at 70 K, and demonstrate a chain-added noise $T_\Sigma = 6.3\pm0.5$ K between 3.5 and 5.5 GHz. While, in principle, any parametric amplifier can be quantum limited even at 4 K, in practice we find the KI-TWPA's performance limited by the temperature of its inputs, and by an excess of noise $T_\mathrm{ex} = 1.9$ K. The dissipation of the KI-TWPA's rf pump constitutes the main power load at 4 K and is about one percent that of a HEMT. These combined noise and power dissipation values pave the way for the KI-TWPA's use as a replacement for semiconductor amplifiers.

Published
2021

9. Study of quasi-particle dynamics using the optical pulse response of asuperconducting resonator

Author

Hu, J., He, Q., Yu, F., Chen, Y., Dai, M., Guan, H., Ouyang, P., Han, J., Liu, C., Dai, X., Mai, Z., Liu, X., Zhang, M., Wei, L. F., Vissers, M. R., Gao, J., and Wang, Y.

Subjects
Condensed Matter - Superconductivity, Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

We study the optical pulse response of a superconducting half-wavelength coplanar waveguide (CPW) resonator. We apply a short optical pulse to the center strip of the CPW resonator, where the current distribution shows antinodes or nodes for different resonance modes, and measure the frequency response. We develop a time-dependent variable inductance circuit model with which we can simulate the optical pulse response of the resonator. By fitting this model to experimental data, we extract the temporal kinetic inductance variations, which directly reflect the quasi-particle recombination with time and diffusion in space. We also retrieve the spatial size of the quasi-particle distribution and the quasi-particle diffusion constant. Our study is very useful for the design of photon-counting kinetic inductance detectors, and the method developed in this work provides a useful way to study the quasi-particle dynamics in the superconductor., Comment: pleae cite as: Appl. Phys. Lett. 119, 022601 (2021)

Published
2021
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10. CCAT-prime Collaboration: Science Goals and Forecasts with Prime-Cam on the Fred Young Submillimeter Telescope

Author

collaboration, CCAT-Prime, Aravena, M., Austermann, J. E., Basu, K., Battaglia, N., Beringue, B., Bertoldi, F., Bigiel, F., Bond, J. R., Breysse, P. C., Broughton, C., Bustos, R., Chapman, S. C., Charmetant, M., Choi, S. K., Chung, D. T., Clark, S. E., Cothard, N. F., Crites, A. T., Dev, A., Douglas, K., Duell, C. J., Dunner, R., Ebina, H., Erler, J., Fich, M., Fissel, L. M., Foreman, S., Gallardo, P. A., Gao, J., García, Pablo, Giovanelli, R., Golec, J. E., Groppi, C. E., Haynes, M. P., Henke, D., Hensley, B., Herter, T., Higgins, R., Hlozek, R., Huber, A., Huber, Z., Hubmayr, J., Jackson, R., Johnstone, D., Karoumpis, C., Keating, L. C., Komatsu, E., Li, Y., Magnelli, B., Matthews, B. C., Mauskopf, P., McMahon, J. J., Meerburg, P. D., Meyers, J., Muralidhara, V., Murray, N. W., Niemack, M. D., Nikola, T., Okada, Y., Puddu, R., Riechers, D. A., Rosolowsky, E., Rossi, K., Rotermund, K., Roy, A., Sadavoy, S. I., Schaaf, R., Schilke, P., Scott, D., Simon, R., Sinclair, Adrian K., Sivakoff, G. R., Stacey, G. J., Stutz, Amelia M., Stutzki, J., Tahani, M., Thanjavur, K., Timmermann, R. A., Ullom, J. N., van Engelen, A., Vavagiakis, E. M., Vissers, M. R., Wheeler, J. D., White, S. D. M., Zhu, Y., and Zou, B.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

We present a detailed overview of the science goals and predictions for the Prime-Cam direct detection camera/spectrometer being constructed by the CCAT-prime collaboration for dedicated use on the Fred Young Submillimeter Telescope (FYST). The FYST is a wide-field, 6-m aperture submillimeter telescope being built (first light in mid-2024) by an international consortium of institutions led by Cornell University and sited at more than 5600 meters on Cerro Chajnantor in northern Chile. Prime-Cam is one of two instruments planned for FYST and will provide unprecedented spectroscopic and broadband measurement capabilities to address important astrophysical questions ranging from Big Bang cosmology through reionization and the formation of the first galaxies to star formation within our own Milky Way galaxy. Prime-Cam on the FYST will have a mapping speed that is over ten times greater than existing and near-term facilities for high-redshift science and broadband polarimetric imaging at frequencies above 300 GHz. We describe details of the science program enabled by this system and our preliminary survey strategies., Comment: 61 pages, 16 figures. Resubmitted to ApJSS July 11, 2022

Published
2021
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11. Overview of the Medium and High Frequency Telescopes of the LiteBIRD satellite mission

Author

Montier, L., Mot, B., de Bernardis, P., Maffei, B., Pisano, G., Columbro, F., Gudmundsson, J. E., Henrot-Versillé, S., Lamagna, L., Montgomery, J., Prouvé, T., Russell, M., Savini, G., Stever, S., Thompson, K. L., Tsujimoto, M., Tucker, C., Westbrook, B., Ade, P. A. R., Adler, A., Allys, E., Arnold, K., Auguste, D., Aumont, J., Aurlien, R., Austermann, J., Baccigalupi, C., Banday, A. J., Banerji, R., Barreiro, R. B., Basak, S., Beall, J., Beck, D., Beckman, S., Bermejo, J., Bersanelli, M., Bonis, J., Borrill, J., Boulanger, F., Bounissou, S., Brilenkov, M., Brown, M., Bucher, M., Calabrese, E., Campeti, P., Carones, A., Casas, F. J., Challinor, A., Chan, V., Cheung, K., Chinone, Y., Cliche, J. F., Colombo, L., Cubas, J., Cukierman, A., Curtis, D., D'Alessandro, G., Dachlythra, N., De Petris, M., Dickinson, C., Diego-Palazuelos, P., Dobbs, M., Dotani, T., Duband, L., Duff, S., Duval, J. M., Ebisawa, K., Elleflot, T., Eriksen, H. K., Errard, J., Essinger-Hileman, T., Finelli, F., Flauger, R., Franceschet, C., Fuskeland, U., Galloway, M., Ganga, K., Gao, J. R., Genova-Santos, R., Gerbino, M., Gervasi, M., Ghigna, T., Gjerløw, E., Gradziel, M. L., Grain, J., Grupp, F., Gruppuso, A., de Haan, T., Halverson, N. W., Hargrave, P., Hasebe, T., Hasegawa, M., Hattori, M., Hazumi, M., Herman, D., Herranz, D., Hill, C. A., Hilton, G., Hirota, Y., Hivon, E., Hlozek, R. A., Hoshino, Y., de la Hoz, E., Hubmayr, J., Ichiki, K., Iida, T., Imada, H., Ishimura, K., Ishino, H., Jaehnig, G., Kaga, T., Kashima, S., Katayama, N., Kato, A., Kawasaki, T., Keskitalo, R., Kisner, T., Kobayashi, Y., Kogiso, N., Kogut, A., Kohri, K., Komatsu, E., Komatsu, K., Konishi, K., Krachmalnicoff, N., Kreykenbohm, I., Kuo, C. L., Kushino, A., Lanen, J. V., Lattanzi, M., Lee, A. T., Leloup, C., Levrier, F., Linder, E., Louis, T., Luzzi, G., Maciaszek, T., Maino, D., Maki, M., Mandelli, S., Martinez-Gonzalez, E., Masi, S., Matsumura, T., Mennella, A., Migliaccio, M., Minami, Y., Mitsuda, K., Morgante, G., Murata, Y., Murphy, J. A., Nagai, M., Nagano, Y., Nagasaki, T., Nagata, R., Nakamura, S., Namikawa, T., Natoli, P., Nerval, S., Nishibori, T., Nishino, H., O'Sullivan, C., Ogawa, H., Oguri, S., Ohsaki, H., Ohta, I. S., Okada, N., Pagano, L., Paiella, A., Paoletti, D., Patanchon, G., Peloton, J., Piacentini, F., Polenta, G., Poletti, D., Puglisi, G., Rambaud, D., Raum, C., Realini, S., Reinecke, M., Remazeilles, M., Ritacco, A., Roudil, G., Rubino-Martin, J. A., Sakurai, H., Sakurai, Y., Sandri, M., Sasaki, M., Scott, D., Seibert, J., Sekimoto, Y., Sherwin, B., Shinozaki, K., Shiraishi, M., Shirron, P., Signorelli, G., Smecher, G., Stompor, R., Sugai, H., Sugiyama, S., Suzuki, A., Suzuki, J., Svalheim, T. L., Switzer, E., Takaku, R., Takakura, H., Takakura, S., Takase, Y., Takeda, Y., Tartari, A., Taylor, E., Terao, Y., Thommesen, H., Thorne, B., Toda, T., Tomasi, M., Tominaga, M., Trappe, N., Tristram, M., Tsuji, M., Ullom, J., Vermeulen, G., Vielva, P., Villa, F., Vissers, M., Vittorio, N., Wehus, I., Weller, J., Wilms, J., Winter, B., Wollack, E. J., Yamasaki, N. Y., Yoshida, T., Yumoto, J., Zannoni, M., and Zonca, A.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

LiteBIRD is a JAXA-led Strategic Large-Class mission designed to search for the existence of the primordial gravitational waves produced during the inflationary phase of the Universe, through the measurements of their imprint onto the polarization of the cosmic microwave background (CMB). These measurements, requiring unprecedented sensitivity, will be performed over the full sky, at large angular scales, and over 15 frequency bands from 34GHz to 448GHz. The LiteBIRD instruments consist of three telescopes, namely the Low-, Medium- and High-Frequency Telescope (respectively LFT, MFT and HFT). We present in this paper an overview of the design of the Medium-Frequency Telescope (89-224GHz) and the High-Frequency Telescope (166-448GHz), the so-called MHFT, under European responsibility, which are two cryogenic refractive telescopes cooled down to 5K. They include a continuous rotating half-wave plate as the first optical element, two high-density polyethylene (HDPE) lenses and more than three thousand transition-edge sensor (TES) detectors cooled to 100mK. We provide an overview of the concept design and the remaining specific challenges that we have to face in order to achieve the scientific goals of LiteBIRD., Comment: SPIE Conference

Published
2021
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12. LiteBIRD: JAXA's new strategic L-class mission for all-sky surveys of cosmic microwave background polarization

Author

Hazumi, M., Ade, P. A. R., Adler, A., Allys, E., Arnold, K., Auguste, D., Aumont, J., Aurlien, R., Austermann, J., Baccigalupi, C., Banday, A. J., Banjeri, R., Barreiro, R. B., Basak, S., Beall, J., Beck, D., Beckman, S., Bermejo, J., de Bernardis, P., Bersanelli, M., Bonis, J., Borrill, J., Boulanger, F., Bounissou, S., Brilenkov, M., Brown, M., Bucher, M., Calabrese, E., Campeti, P., Carones, A., Casas, F. J., Challinor, A., Chan, V., Cheung, K., Chinone, Y., Cliche, J. F., Colombo, L., Columbro, F., Cubas, J., Cukierman, A., Curtis, D., D'Alessandro, G., Dachlythra, N., De Petris, M., Dickinson, C., Diego-Palazuelos, P., Dobbs, M., Dotani, T., Duband, L., Duff, S., Duval, J. M., Ebisawa, K., Elleflot, T., Eriksen, H. K., Errard, J., Essinger-Hileman, T., Finelli, F., Flauger, R., Franceschet, C., Fuskeland, U., Galloway, M., Ganga, K., Gao, J. R., Genova-Santos, R., Gerbino, M., Gervasi, M., Ghigna, T., Gjerløw, E., Gradziel, M. L., Grain, J., Grupp, F., Gruppuso, A., Gudmundsson, J. E., de Haan, T., Halverson, N. W., Hargrave, P., Hasebe, T., Hasegawa, M., Hattori, M., Henrot-Versillé, S., Herman, D., Herranz, D., Hill, C. A., Hilton, G., Hirota, Y., Hivon, E., Hlozek, R. A., Hoshino, Y., de la Hoz, E., Hubmayr, J., Ichiki, K., Iida, T., Imada, H., Ishimura, K., Ishino, H., Jaehnig, G., Kaga, T., Kashima, S., Katayama, N., Kato, A., Kawasaki, T., Keskitalo, R., Kisner, T., Kobayashi, Y., Kogiso, N., Kogut, A., Kohri, K., Komatsu, E., Komatsu, K., Konishi, K., Krachmalnicoff, N., Kreykenbohm, I., Kuo, C. L., Kushino, A., Lamagna, L., Lanen, J. V., Lattanzi, M., Lee, A. T., Leloup, C., Levrier, F., Linder, E., Louis, T., Luzzi, G., Maciaszek, T., Maffei, B., Maino, D., Maki, M., Mandelli, S., Martinez-Gonzalez, E., Masi, S., Matsumura, T., Mennella, A., Migliaccio, M., Minami, Y., Mitsuda, K., Montgomery, J., Montier, L., Morgante, G., Mot, B., Murata, Y., Murphy, J. A., Nagai, M., Nagano, Y., Nagasaki, T., Nagata, R., Nakamura, S., Namikawa, T., Natoli, P., Nerval, S., Nishibori, T., Nishino, H., Noviello, F., O'Sullivan, C., Ogawa, H., Oguri, S., Ohsaki, H., Ohta, I. S., Okada, N., Pagano, L., Paiella, A., Paoletti, D., Patanchon, G., Peloton, J., Piacentini, F., Pisano, G., Polenta, G., Poletti, D., Prouvé, T., Puglisi, G., Rambaud, D., Raum, C., Realini, S., Reinecke, M., Remazeilles, M., Ritacco, A., Roudil, G., Rubino-Martin, J. A., Russell, M., Sakurai, H., Sakurai, Y., Sandri, M., Sasaki, M., Savini, G., Scott, D., Seibert, J., Sekimoto, Y., Sherwin, B., Shinozaki, K., Shiraishi, M., Shirron, P., Signorelli, G., Smecher, G., Stever, S., Stompor, R., Sugai, H., Sugiyama, S., Suzuki, A., Suzuki, J., Svalheim, T. L., Switzer, E., Takaku, R., Takakura, H., Takakura, S., Takase, Y., Takeda, Y., Tartari, A., Taylor, E., Terao, Y., Thommesen, H., Thompson, K. L., Thorne, B., Toda, T., Tomasi, M., Tominaga, M., Trappe, N., Tristram, M., Tsuji, M., Tsujimoto, M., Tucker, C., Ullom, J., Vermeulen, G., Vielva, P., Villa, F., Vissers, M., Vittorio, N., Wehus, I., Weller, J., Westbrook, B., Wilms, J., Winter, B., Wollack, E. J., Yamasaki, N. Y., Yoshida, T., Yumoto, J., Zannoni, M., and Zonca, A.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics, General Relativity and Quantum Cosmology, High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

LiteBIRD, the Lite (Light) satellite for the study of B-mode polarization and Inflation from cosmic background Radiation Detection, is a space mission for primordial cosmology and fundamental physics. JAXA selected LiteBIRD in May 2019 as a strategic large-class (L-class) mission, with its expected launch in the late 2020s using JAXA's H3 rocket. LiteBIRD plans to map the cosmic microwave background (CMB) polarization over the full sky with unprecedented precision. Its main scientific objective is to carry out a definitive search for the signal from cosmic inflation, either making a discovery or ruling out well-motivated inflationary models. The measurements of LiteBIRD will also provide us with an insight into the quantum nature of gravity and other new physics beyond the standard models of particle physics and cosmology. To this end, LiteBIRD will perform full-sky surveys for three years at the Sun-Earth Lagrangian point L2 for 15 frequency bands between 34 and 448 GHz with three telescopes, to achieve a total sensitivity of 2.16 micro K-arcmin with a typical angular resolution of 0.5 deg. at 100GHz. We provide an overview of the LiteBIRD project, including scientific objectives, mission requirements, top-level system requirements, operation concept, and expected scientific outcomes., Comment: 20 pages, 9 figures

Published
2021
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13. Concept Design of Low Frequency Telescope for CMB B-mode Polarization satellite LiteBIRD

Author

Sekimoto, Y., Ade, P. A. R., Adler, A., Allys, E., Arnold, K., Auguste, D., Aumont, J., Aurlien, R., Austermann, J., Baccigalupi, C., Banday, A. J., Banerji, R., Barreiro, R. B., Basak, S., Beall, J., Beck, D., Beckman, S., Bermejo, J., de Bernardis, P., Bersanelli, M., Bonis, J., Borrill, J., Boulanger, F., Bounissou, S., Brilenkov, M., Brown, M., Bucher, M., Calabrese, E., Campeti, P., Carones, A., Casas, F. J., Challinor, A., Chan, V., Cheung, K., Chinone, Y., Cliche, J. F., Colombo, L., Columbro, F., Cubas, J., Cukierman, A., Curtis, D., D'Alessandro, G., Dachlythra, N., De Petris, M., Dickinson, C., Diego-Palazuelos, P., Dobbs, M., Dotani, T., Duband, L., Duff, S., Duval, J. M., Ebisawa, K., Elleflot, T., Eriksen, H. K., Errard, J., Essinger-Hileman, T., Finelli, F., Flauger, R., Franceschet, C., Fuskeland, U., Galloway, M., Ganga, K., Gao, J. R., Genova-Santos, R., Gerbino, M., Gervasi, M., Ghigna, T., Gjerløw, E., Gradziel, M. L., Grain, J., Grupp, F., Gruppuso, A., Gudmundsson, J. E., de Haan, T., Halverson, N. W., Hargrave, P., Hasebe, T., Hasegawa, M., Hattori, M., Hazumi, M., Henrot-Versillé, S., Herman, D., Herranz, D., Hill, C. A., Hilton, G., Hirota, Y., Hivon, E., Hlozek, R. A., Hoshino, Y., de la Hoz, E., Hubmayr, J., Ichiki, K., iida, T., Imada, H., Ishimura, K., Ishino, H., Jaehnig, G., Kaga, T., Kashima, S., Katayama, N., Kato, A., Kawasaki, T., Keskitalo, R., Kisner, T., Kobayashi, Y., Kogiso, N., Kogut, A., Kohri, K., Komatsu, E., Komatsu, K., Konishi, K., Krachmalnicoff, N., Kreykenbohm, I., Kuo, C. L., Kushino, A., Lamagna, L., Lanen, J. V., Lattanzi, M., Lee, A. T., Leloup, C., Levrier, F., Linder, E., Louis, T., Luzzi, G., Maciaszek, T., Maffei, B., Maino, D., Maki, M., Mandelli, S., Martinez-Gonzalez, E., Masi, S., Matsumura, T., Mennella, A., Migliaccio, M., Minanmi, Y., Mitsuda, K., Montgomery, J., Montier, L., Morgante, G., Mot, B., Murata, Y., Murphy, J. A., Nagai, M., Nagano, Y., Nagasaki, T., Nagata, R., Nakamura, S., Namikawa, T., Natoli, P., Nerval, S., Nishibori, T., Nishino, H., O'Sullivan, C., Ogawa, H., Oguri, S., Ohsaki, H., Ohta, I. S., Okada, N., Pagano, L., Paiella, A., Paoletti, D., Patanchon, G., Peloton, J., Piacentini, F., Pisano, G., Polenta, G., Poletti, D., Prouvé, T., Puglisi, G., Rambaud, D., Raum, C., Realini, S., Reinecke, M., Remazeilles, M., Ritacco, A., Roudil, G., Rubino-Martin, J. A., Russell, M., Sakurai, H., Sakurai, Y., Sandri, M., Sasaki, M., Savini, G., Scott, D., Seibert, J., Sherwin, B., Shinozaki, K., Shiraishi, M., Shirron, P., Signorelli, G., Smecher, G., Stever, S., Stompor, R., Sugai, H., Sugiyama, S., Suzuki, A., Suzuki, J., Svalheim, T. L., Switzer, E., Takaku, R., Takakura, H., Takakura, S., Takase, Y., Takeda, Y., Tartari, A., Taylor, E., Terao, Y., Thommesen, H., Thompson, K. L., Thorne, B., Toda, T., Tomasi, M., Tominaga, M., Trappe, N., Tristram, M., Tsuji, M., Tsujimoto, M., Tucker, C., Ullom, J., Vermeulen, G., Vielva, P., Villa, F., Vissers, M., Vittorio, N., Wehus, I., Weller, J., Westbrook, B., Wilms, J., Winter, B., Wollack, E. J., Yamasaki, N. Y., Yoshida, T., Yumoto, J., Zannoni, M., and Zonca, A.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

LiteBIRD has been selected as JAXA's strategic large mission in the 2020s, to observe the cosmic microwave background (CMB) $B$-mode polarization over the full sky at large angular scales. The challenges of LiteBIRD are the wide field-of-view (FoV) and broadband capabilities of millimeter-wave polarization measurements, which are derived from the system requirements. The possible paths of stray light increase with a wider FoV and the far sidelobe knowledge of $-56$ dB is a challenging optical requirement. A crossed-Dragone configuration was chosen for the low frequency telescope (LFT : 34--161 GHz), one of LiteBIRD's onboard telescopes. It has a wide field-of-view ($18^\circ \times 9^\circ$) with an aperture of 400 mm in diameter, corresponding to an angular resolution of about 30 arcminutes around 100 GHz. The focal ratio f/3.0 and the crossing angle of the optical axes of 90$^\circ$ are chosen after an extensive study of the stray light. The primary and secondary reflectors have rectangular shapes with serrations to reduce the diffraction pattern from the edges of the mirrors. The reflectors and structure are made of aluminum to proportionally contract from warm down to the operating temperature at $5\,$K. A 1/4 scaled model of the LFT has been developed to validate the wide field-of-view design and to demonstrate the reduced far sidelobes. A polarization modulation unit (PMU), realized with a half-wave plate (HWP) is placed in front of the aperture stop, the entrance pupil of this system. A large focal plane with approximately 1000 AlMn TES detectors and frequency multiplexing SQUID amplifiers is cooled to 100 mK. The lens and sinuous antennas have broadband capability. Performance specifications of the LFT and an outline of the proposed verification plan are presented., Comment: 21 pages, 14 figures

Published
2021
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14. Design and pre-flight performance of SPIDER 280 GHz receivers

Author

Shaw, E. C., Ade, P. A. R., Akers, S., Amiri, M., Austermann, J., Beall, J., Becker, D. T., Benton, S. J., Bergman, A. S., Bock, J. J., Bond, J. R., Bryan, S. A., Chiang, H. C., Contaldi, C. R., Domagalski, R. S., Doré, O., Duff, S. M., Duivenvoorden, A. J., Eriksen, H. K., Farhang, M., Filippini, J. P., Fissel, L. M., Fraisse, A. A., Freese, K., Galloway, M., Gambrel, A. E., Gandilo, N. N., Ganga, K., Grigorian, A., Gualtieri, R., Gudmundsson, J. E., Halpern, M., Hartley, J., Hasselfield, M., Hilton, G., Holmes, W., Hristov, V. V., Huang, Z., Hubmayr, J., Irwin, K. D., Jones, W. C., Kahn, A., Kuo, C. L., Kermish, Z. D., Lennox, A., Leung, J. S. -Y., Li, S., Mason, P. V., Megerian, K., Mocanu, L. M., Moncelsi, L., Morford, T. A., Nagy, J. M., Nie, R., Netterfield, C. B., Nolta, M., Osherson, B., Padilla, I. L., Rahlin, A. S., Redmond, S., Reintsema, C., Romualdez, L. J., Ruhl, J. E., Runyan, M. C., Shariff, J. A., Shiu, C., Soler, J. D., Song, X., Thommesen, H., Trangsrud, A., Tucker, C., Tucker, R. S., Turner, A. D., Ullom, J., van der List, J. F., Van Lanen, J., Vissers, M. R., Weber, A. C., Wen, S., Wehus, I. K., Wiebe, D. V., and Young, E. Y.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

In this work we describe upgrades to the Spider balloon-borne telescope in preparation for its second flight, currently planned for December 2021. The Spider instrument is optimized to search for a primordial B-mode polarization signature in the cosmic microwave background at degree angular scales. During its first flight in 2015, Spider mapped ~10% of the sky at 95 and 150 GHz. The payload for the second Antarctic flight will incorporate three new 280 GHz receivers alongside three refurbished 95- and 150 GHz receivers from Spider's first flight. In this work we discuss the design and characterization of these new receivers, which employ over 1500 feedhorn-coupled transition-edge sensors. We describe pre-flight laboratory measurements of detector properties, and the optical performance of completed receivers. These receivers will map a wide area of the sky at 280 GHz, providing new information on polarized Galactic dust emission that will help to separate it from the cosmological signal., Comment: 13 pages, 8 figures; as published in the conference proceedings for SPIE Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X (2020)

Published
2020
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15. Sub-Kelvin Thermometer for On-Chip Measurements of Microwave Devices Utilizing Two-Level Systems in Superconducting Microresonators

Author

Wheeler, J., Vissers, M. R., Malnou, M., Hubmayr, J., Ullom, J. N., and Gao, J.

Subjects
Physics - Instrumentation and Detectors, Condensed Matter - Superconductivity
Abstract

We present a superconducting microresonator thermometer based on two-level systems (TLS) that is drop-in compatible with cryogenic microwave systems. The operational temperature range is 50-1000~mK (which may be extended to 5~mK), and the sensitivity (50-75~$\mu$K/$\sqrt{\mathrm{Hz}}$) is relatively uniform across this range. The miniature footprint that conveniently attaches to the feedline of a cryogenic microwave device facilitates the measurement of on-chip device temperature and requires no additional thermometry wiring or readout electronics. We demonstrate the practical use of these TLS thermometers to investigate static and transient chip heating in a kinetic inductance traveling-wave parametric amplifier operated with a strong pump tone. TLS thermometry may find broad application in cryogenic microwave devices such as superconducting qubits and detectors.

Published
2020
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16. A three-wave mixing kinetic inductance traveling-wave amplifier with near-quantum-limited noise performance

Author

Malnou, M., Vissers, M. R., Wheeler, J. D., Aumentado, J., Hubmayr, J., Ullom, J. N., and Gao, J.

Subjects
Quantum Physics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

We present a theoretical model and experimental characterization of a microwave kinetic inductance traveling-wave amplifier (KIT), whose noise performance, measured by a shot-noise tunnel junction (SNTJ), approaches the quantum limit. Biased with a dc current, the KIT operates in a three-wave mixing fashion, thereby reducing by several orders of magnitude the power of the microwave pump tone and associated parasitic heating compared to conventional four-wave mixing KIT devices. It consists of a 50 Ohms artificial transmission line whose dispersion allows for a controlled amplification bandwidth. We measure $16.5^{+1}_{-1.3}$ dB of gain across a 2 GHz bandwidth with an input 1 dB compression power of -63 dBm, in qualitative agreement with theory. Using a theoretical framework that accounts for the SNTJ-generated noise entering both the signal and idler ports of the KIT, we measure the system-added noise of an amplification chain that integrates the KIT as the first amplifier. This system-added noise, $3.1\pm0.6$ quanta (equivalent to $0.66\pm0.15$ K) between 3.5 and 5.5 GHz, is the one that a device replacing the SNTJ in that chain would see. This KIT is therefore suitable to read large arrays of microwave kinetic inductance detectors and promising for multiplexed superconducting qubit readout.

Published
2020
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17. Updated design of the CMB polarization experiment satellite LiteBIRD

Author

Sugai, H., Ade, P. A. R., Akiba, Y., Alonso, D., Arnold, K., Aumont, J., Austermann, J., Baccigalupi, C., Banday, A. J., Banerji, R., Barreiro, R. B., Basak, S., Beall, J., Beckman, S., Bersanelli, M., Borrill, J., Boulanger, F., Brown, M. L., Bucher, M., Buzzelli, A., Calabrese, E., Casas, F. J., Challinor, A., Chan, V., Chinone, Y., Cliche, J. -F., Columbro, F., Cukierman, A., Curtis, D., Danto, P., de Bernardis, P., de Haan, T., De Petris, M., Dickinson, C., Dobbs, M., Dotani, T., Duband, L., Ducout, A., Duff, S., Duivenvoorden, A., Duval, J. -M., Ebisawa, K., Elleflot, T., Enokida, H., Eriksen, H. K., Errard, J., Essinger-Hileman, T., Finelli, F., Flauger, R., Franceschet, C., Fuskeland, U., Ganga, K., Gao, J. -R., Génova-Santos, R., Ghigna, T., Gomez, A., Gradziel, M. L., Grain, J., Grupp, F., Gruppuso, A., Gudmundsson, J. E., Halverson, N. W., Hargrave, P., Hasebe, T., Hasegawa, M., Hattori, M., Hazumi, M., Henrot-Versille, S., Herranz, D., Hill, C., Hilton, G., Hirota, Y., Hivon, E., Hlozek, R., Hoang, D. -T., Hubmayr, J., Ichiki, K., Iida, T., Imada, H., Ishimura, K., Ishino, H., Jaehnig, G. C., Jones, M., Kaga, T., Kashima, S., Kataoka, Y., Katayama, N., Kawasaki, T., Keskitalo, R., Kibayashi, A., Kikuchi, T., Kimura, K., Kisner, T., Kobayashi, Y., Kogiso, N., Kogut, A., Kohri, K., Komatsu, E., Komatsu, K., Konishi, K., Krachmalnicoff, N., Kuo, C. L., Kurinsky, N., Kushino, A., Kuwata-Gonokami, M., Lamagna, L., Lattanzi, M., Lee, A. T., Linder, E., Maffei, B., Maino, D., Maki, M., Mangilli, A., Martínez-González, E., Masi, S., Mathon, R., Matsumura, T., Mennella, A., Migliaccio, M., Minami, Y., Mistuda, K., Molinari, D., Montier, L., Morgante, G., Mot, B., Murata, Y., Murphy, J. A., Nagai, M., Nagata, R., Nakamura, S., Namikawa, T., Natoli, P., Nerva, S., Nishibori, T., Nishino, H., Nomura, Y., Noviello, F., O'Sullivan, C., Ochi, H., Ogawa, H., Ohsaki, H., Ohta, I., Okada, N., Pagano, L., Paiella, A., Paoletti, D., Patanchon, G., Piacentini, F., Pisano, G., Polenta, G., Poletti, D., Prouvé, T., Puglisi, G., Rambaud, D., Raum, C., Realini, S., Remazeilles, M., Roudil, G., Rubiño-Martín, J. A., Russell, M., Sakurai, H., Sakurai, Y., Sandri, M., Savini, G., Scott, D., Sekimoto, Y., Sherwin, B. D., Shinozaki, K., Shiraishi, M., Shirron, P., Signorelli, G., Smecher, G., Spizzi, P., Stever, S. L., Stompor, R., Sugiyama, S., Suzuki, A., Suzuki, J., Switzer, E., Takaku, R., Takakura, H., Takakura, S., Takeda, Y., Taylor, A., Taylor, E., Terao, Y., Thompson, K. L., Thorne, B., Tomasi, M., Tomida, H., Trappe, N., Tristram, M., Tsuji, M., Tsujimoto, M., Tucker, C., Ullom, J., Uozumi, S., Utsunomiya, S., Van Lanen, J., Vermeulen, G., Vielva, P., Villa, F., Vissers, M., Vittorio, N., Voisin, F., Walker, I., Watanabe, N., Wehus, I., Weller, J., Westbrook, B., Winter, B., Wollack, E., Yamamoto, R., Yamasaki, N. Y., Yanagisawa, M., Yoshida, T., Yumoto, J., Zannoni, M., and Zonca, A.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

Recent developments of transition-edge sensors (TESs), based on extensive experience in ground-based experiments, have been making the sensor techniques mature enough for their application on future satellite CMB polarization experiments. LiteBIRD is in the most advanced phase among such future satellites, targeting its launch in Japanese Fiscal Year 2027 (2027FY) with JAXA's H3 rocket. It will accommodate more than 4000 TESs in focal planes of reflective low-frequency and refractive medium-and-high-frequency telescopes in order to detect a signature imprinted on the cosmic microwave background (CMB) by the primordial gravitational waves predicted in cosmic inflation. The total wide frequency coverage between 34GHz and 448GHz enables us to extract such weak spiral polarization patterns through the precise subtraction of our Galaxy's foreground emission by using spectral differences among CMB and foreground signals. Telescopes are cooled down to 5Kelvin for suppressing thermal noise and contain polarization modulators with transmissive half-wave plates at individual apertures for separating sky polarization signals from artificial polarization and for mitigating from instrumental 1/f noise. Passive cooling by using V-grooves supports active cooling with mechanical coolers as well as adiabatic demagnetization refrigerators. Sky observations from the second Sun-Earth Lagrangian point, L2, are planned for three years. An international collaboration between Japan, USA, Canada, and Europe is sharing various roles. In May 2019, the Institute of Space and Astronautical Science (ISAS), JAXA selected LiteBIRD as the strategic large mission No. 2., Comment: Journal of Low Temperature Physics, in press

Published
2020
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18. Sensitivity Modeling for LiteBIRD

Author

Hasebe, T., Ade, P. A. R., Adler, A., Allys, E., Alonso, D., Arnold, K., Auguste, D., Aumont, J., Aurlien, R., Austermann, J., Azzoni, S., Baccigalupi, C., Banday, A. J., Banerji, R., Barreiro, R. B., Bartolo, N., Basak, S., Battistelli, E., Bautista, L., Beall, J., Beck, D., Beckman, S., Benabed, K., Bermejo-Ballesteros, J., Bersanelli, M., Bonis, J., Borrill, J., Bouchet, F., Boulanger, F., Bounissou, S., Brilenkov, M., Brown, M. L., Bucher, M., Calabrese, E., Calvo, M., Campeti, P., Carones, A., Casas, F. J., Catalano, A., Challinor, A., Chan, V., Cheung, K., Chinone, Y., Cliche, J., Columbro, F., Coulton, W., Cubas, J., Cukierman, A., Curtis, D., D’Alessandro, G., Dachlythra, K., de Bernardis, P., de Haan, T., de la Hoz, E., De Petris, M., Torre, S. Della, Dickinson, C., Diego-Palazuelos, P., Dobbs, M., Dotani, T., Douillet, D., Duband, L., Ducout, A., Duff, S., Duval, J. M., Ebisawa, K., Elleflot, T., Eriksen, H. K., Errard, J., Essinger-Hileman, T., Finelli, F., Flauger, R., Franceschet, C., Fuskeland, U., Galli, S., Galloway, M., Ganga, K., Gao, J. R., Genova-Santos, R. T., Gerbino, M., Gervasi, M., Ghigna, T., Giardiello, S., Gjerløw, E., Gradziel, M. L., Grain, J., Grandsire, L., Grupp, F., Gruppuso, A., Gudmundsson, J. E., Halverson, N. W., Hamilton, J., Hargrave, P., Hasegawa, M., Hattori, M., Hazumi, M., Henrot-Versillé, S., Hergt, L. T., Herman, D., Herranz, D., Hill, C. A., Hilton, G., Hivon, E., Hlozek, R. A., Hoang, T. D., Hornsby, A. L., Hoshino, Y., Hubmayr, J., Ichiki, K., Iida, T., Imada, H., Ishimura, K., Ishino, H., Jaehnig, G., Jones, M., Kaga, T., Kashima, S., Katayama, N., Kato, A., Kawasaki, T., Keskitalo, R., Kisner, T., Kobayashi, Y., Kogiso, N., Kogut, A., Kohri, K., Komatsu, E., Komatsu, K., Konishi, K., Krachmalnicoff, N., Kreykenbohm, I., Kuo, C. L., Kushino, A., Lamagna, L., Lanen, J. V., Laquaniello, G., Lattanzi, M., Lee, A. T., Leloup, C., Levrier, F., Linder, E., Louis, T., Luzzi, G., Macias-Perez, J., Maciaszek, T., Maffei, B., Maino, D., Maki, M., Mandelli, S., Maris, M., Martínez-González, E., Masi, S., Massa, M., Matarrese, S., Matsuda, F. T., Matsumura, T., Mele, L., Mennella, A., Migliaccio, M., Minami, Y., Mitsuda, K., Moggi, A., Monfardini, A., Montgomery, J., Montier, L., Morgante, G., Mot, B., Murata, Y., Murphy, J. A., Nagai, M., Nagano, Y., Nagasaki, T., Nagata, R., Nakamura, S., Nakano, R., Namikawa, T., Nati, F., Natoli, P., Nerval, S., Nishibori, T., Nishino, H., Noviello, F., O’Sullivan, C., Odagiri, K., Ogawa, H., Ogawa, H., Oguri, S., Ohsaki, H., Ohta, I. S., Okada, N., Okada, N., Pagano, L., Paiella, A., Paoletti, D., Passerini, A., Patanchon, G., Pelgrim, V., Peloton, J., Piacentini, F., Piat, M., Pisano, G., Polenta, G., Poletti, D., Prouvé, T., Puglisi, G., Rambaud, D., Raum, C., Realini, S., Reinecke, M., Remazeilles, M., Ritacco, A., Roudil, G., Rubino-Martin, J., Russell, M., Sakurai, H., Sakurai, Y., Sandri, M., Sasaki, M., Savini, G., Scott, D., Seibert, J., Sekimoto, Y., Sherwin, B., Shinozaki, K., Shiraishi, M., Shirron, P., Signorelli, G., Smecher, G., Spinella, F., Stever, S., Stompor, R., Sugiyama, S., Sullivan, R., Suzuki, A., Suzuki, J., Svalheim, T. L., Switzer, E., Takaku, R., Takakura, H., Takakura, S., Takase, Y., Takeda, Y., Tartari, A., Tavagnacco, D., Taylor, A., Taylor, E., Terao, Y., Thermeau, J., Thommesen, H., Thompson, K. L., Thorne, B., Toda, T., Tomasi, M., Tominaga, M., Trappe, N., Tristram, M., Tsuji, M., Tsujimoto, M., Tucker, C., Ullom, J., Vacher, L., Vermeulen, G., Vielva, P., Villa, F., Vissers, M., Vittorio, N., Wandelt, B., Wang, W., Watanuki, K., Wehus, I. K., Weller, J., Westbrook, B., Wilms, J., Winter, B., Wollack, E. J., Yamasaki, N. Y., Yoshida, T., Yumoto, J., Zacchei, A., Zannoni, M., and Zonca, A.

Published
2022
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22. Optical Characterization of OMT-Coupled TES Bolometers for LiteBIRD

Author

Hubmayr, J., Ade, P. A. R., Adler, A., Allys, E., Alonso, D., Arnold, K., Auguste, D., Aumont, J., Aurlien, R., Austermann, J. E., Azzoni, S., Baccigalupi, C., Banday, A. J., Banerji, R., Barreiro, R. B., Bartolo, N., Basak, S., Battistelli, E., Bautista, L., Beall, J. A., Beck, D., Beckman, S., Benabed, K., Bermejo-Ballesteros, J., Bersanelli, M., Bonis, J., Borrill, J., Bouchet, F., Boulanger, F., Bounissou, S., Brilenkov, M., Brown, M. L., Bucher, M., Calabrese, E., Calvo, M., Campeti, P., Carones, A., Casas, F. J., Catalano, A., Challinor, A., Chan, V., Cheung, K., Chinone, Y., Chiocchetta, C., Clark, S. E., Clermont, L., Clesse, S., Cliche, J., Columbro, F., Connors, J. A., Coppolecchia, A., Coulton, W., Cubas, J., Cukierman, A., Curtis, D., Cuttaia, F., D’Alessandro, G., Dachlythra, K., de Bernardis, P., de Haan, T., de la Hoz, E., De Petris, M., Della Torre, S., Daz Garca, J. J., Dickinson, C., Diego-Palazuelos, P., Dobbs, M., Dotani, T., Douillet, D., Doumayrou, E., Duband, L., Ducout, A., Duff, S. M., Duval, J. M., Ebisawa, K., Elleflot, T., Eriksen, H. K., Errard, J., Essinger-Hileman, T., Farrens, S., Finelli, F., Flauger, R., Fleury-Frenette, K., Franceschet, C., Fuskeland, U., Galli, L., Galli, S., Galloway, M., Ganga, K., Gao, J. R., Genova-Santos, R. T., Georges, M., Gerbino, M., Gervasi, M., Ghigna, T., Giardiello, S., Gjerlw, E., Gonzles, R. Gonzlez, Gradziel, M. L., Grain, J., Grandsire, L., Grupp, F., Gruppuso, A., Gudmundsson, J. E., Halverson, N. W., Hamilton, J., Hargrave, P., Hasebe, T., Hasegawa, M., Hattori, M., Hazumi, M., Henrot-Versill, S., Hensley, B., Herman, D., Herranz, D., Hilton, G. C., Hivon, E., Hlozek, R. A., Hoang, D., Hornsby, A. L., Hoshino, Y., Ichiki, K., Iida, T., Ikemoto, T., Imada, H., Ishimura, K., Ishino, H., Jaehnig, G., Jones, M., Kaga, T., Kashima, S., Katayama, N., Kato, A., Kawasaki, T., Keskitalo, R., Kintziger, C., Kisner, T., Kobayashi, Y., Kogiso, N., Kogut, A., Kohri, K., Komatsu, E., Komatsu, K., Konishi, K., Krachmalnicoff, N., Kreykenbohm, I., Kuo, C. L., Kushino, A., Lamagna, L., Lanen, J. V., Laquaniello, G., Lattanzi, M., Lee, A. T., Leloup, C., Levrier, F., Linder, E., Link, M. J., Lonappan, A. I., Louis, T., Luzzi, G., Macias-Perez, J., Maciaszek, T., Maffei, B., Maino, D., Maki, M., Mandelli, S., Maris, M., Marquet, B., Martnez-Gonzlez, E., Martire, F. A., Masi, S., Massa, M., Masuzawa, M., Matarrese, S., Matsuda, F. T., Matsumura, T., Mele, L., Mennella, A., Migliaccio, M., Minami, Y., Mitsuda, K., Moggi, A., Monelli, M., Monfardini, A., Montgomery, J., Montier, L., Morgante, G., Mot, B., Murata, Y., Murphy, J. A., Nagai, M., Nagano, Y., Nagasaki, T., Nagata, R., Nakamura, S., Nakano, R., Namikawa, T., Nati, F., Natoli, P., Nerval, S., Neto Godry Farias, N., Nishibori, T., Nishino, H., Noviello, F., O’Neil, G. C., O’Sullivan, C., Odagiri, K., Ochi, H., Ogawa, H., Ogawa, H., Oguri, S., Ohsaki, H., Ohta, I. S., Okada, N., Pagano, L., Paiella, A., Paoletti, D., Pascual Cisneros, G., Passerini, A., Patanchon, G., Pelgrim, V., Peloton, J., Pettorino, V., Piacentini, F., Piat, M., Piccirilli, G., Pinsard, F., Pisano, G., Plesseria, J., Polenta, G., Poletti, D., Prouv, T., Puglisi, G., Rambaud, D., Raum, C., Realini, S., Reinecke, M., Reintsema, C. D., Remazeilles, M., Ritacco, A., Rosier, P., Roudil, G., Rubino-Martin, J., Russell, M., Sakurai, H., Sakurai, Y., Sandri, M., Sasaki, M., Savini, G., Scott, D., Seibert, J., Sekimoto, Y., Sherwin, B., Shinozaki, K., Shiraishi, M., Shirron, P., Shitvov, A., Signorelli, G., Smecher, G., Spinella, F., Starck, J., Stever, S., Stompor, R., Sudiwala, R., Sugiyama, S., Sullivan, R., Suzuki, A., Suzuki, J., Suzuki, T., Svalheim, T. L., Switzer, E., Takaku, R., Takakura, H., Takakura, S., Takase, Y., Takeda, Y., Tartari, A., Tavagnacco, D., Taylor, A., Taylor, E., Terao, Y., Terenzi, L., Thermeau, J., Thommesen, H., Thompson, K. L., Thorne, B., Toda, T., Tomasi, M., Tominaga, M., Trappe, N., Tristram, M., Tsuji, M., Tsujimoto, M., Tucker, C., Ueki, R., Ullom, J. N., Umemori, K., Vacher, L., Van Lanen, J., Vermeulen, G., Vielva, P., Villa, F., Vissers, M. R., Vittorio, N., Wandelt, B., Wang, W., Wehus, I. K., Weller, J., Westbrook, B., Weymann-Despres, G., Wilms, J., Winter, B., Wollack, E. J., Yamasaki, N. Y., Yoshida, T., Yumoto, J., Watanuki, K., Zacchei, A., Zannoni, M., and Zonca, A.

Published
2022
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24. Millimeter-Wave Polarimeters Using Kinetic Inductance Detectors for TolTEC and Beyond

Author

Austermann, J. E., Beall, J. A., Bryan, S. A., Dober, B., Gao, J., Hilton, G., Hubmayr, J., Mauskopf, P., McKenney, C. M., Simon, S. M., Ullom, J. N., Vissers, M. R., and Wilson, G. W.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

Microwave Kinetic Inductance Detectors (MKIDs) provide a compelling path forward to the large-format polarimeter, imaging, and spectrometer arrays needed for next-generation experiments in millimeter-wave cosmology and astronomy. We describe the development of feedhorn-coupled MKID detectors for the TolTEC millimeter-wave imaging polarimeter being constructed for the 50-meter Large Millimeter Telescope (LMT). Observations with TolTEC are planned to begin in early 2019. TolTEC will comprise $\sim$7,000 polarization sensitive MKIDs and will represent the first MKID arrays fabricated and deployed on monolithic 150 mm diameter silicon wafers -- a critical step towards future large-scale experiments with over $10^5$ detectors. TolTEC will operate in observational bands at 1.1, 1.4, and 2.0 mm and will use dichroic filters to define a physically independent focal plane for each passband, thus allowing the polarimeters to use simple, direct-absorption inductive structures that are impedance matched to incident radiation. This work is part of a larger program at NIST-Boulder to develop MKID-based detector technologies for use over a wide range of photon energies spanning millimeter-waves to X-rays. We present the detailed pixel layout and describe the methods, tools, and flexible design parameters that allow this solution to be optimized for use anywhere in the millimeter and sub-millimeter bands. We also present measurements of prototype devices operating in the 1.1 mm band and compare the observed optical performance to that predicted from models and simulations., Comment: 7 pages, 4 figures, 1 table. Submitted to Journal of Low Temperature Physics

Published
2018
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25. Measurement of optical constants of TiN and TiN/Ti/TiN multilayer films for microwave kinetic inductance photon-number-resolving detectors

Author

Dai, M., Guo, W., Liu, X., Zhang, M., Wang, Y., Wei, L. F., Hilton, G. C., Hubmayr, J., Ullom, J., Gao, J., and Vissers, M. R.

Subjects
Physics - Optics, Physics - Applied Physics
Abstract

We deposit thin titanium-nitride (TiN) and TiN/Ti/TiN multilayer films on sapphire substrates and measure the reflectance and transmittance in the wavelength range from 400 nm to 2000 nm using a spectrophotometer. The optical constants (complex refractive indices), including the refractive index n and the extinction coefficient k, have been derived. With the extracted refractive indices, we propose an optical stack structure using low-loss amorphous Si (a-Si) anti-reflective coating and a backside aluminum (Al) reflecting mirror, which can in theory achieve 100% photon absorption at 1550 nm. The proposed optical design shows great promise in enhancing the optical efficiency of TiN-based microwave kinetic inductance photon-number-resolving detectors.

Published
2018
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26. Superconducting micro-resonator arrays with ideal frequency spacing and extremely low frequency collision rate

Author

Liu, X., Guo, W., Wang, Y., Dai, M., Wei, L. F., Dober, B., McKenney, C., Hilton, G. C., Hubmayr, J., Austermann, J. E., Ullom, J. N., Gao, J., and Vissers, M. R.

Subjects
Physics - Instrumentation and Detectors, Condensed Matter - Superconductivity
Abstract

We present a wafer trimming technique for producing superconducting micro-resonator arrays with highly uniform frequency spacing. With the light-emitting diode (LED) mapper technique demonstrated previously, we first map the measured resonance frequencies to the physical resonators. Then, we fine-tune each resonator's frequency by lithographically trimming a small length, calculated from the deviation of the measured frequency from its design value, from the interdigitated capacitor. We demonstrate this technique on a 127-resonator array made of titanium-nitride (TiN) and show that the uniformity of frequency spacing is greatly improved. The array yield in terms of frequency collisions improves from 84% to 97%, while the quality factors and noise properties are unaffected. The wafer trimming technique provides an easy-to-implement tool to improve the yield and multiplexing density of large resonator arrays, which is important for various applications in photon detection and quantum computing., Comment: 5 pages,4 figures

Published
2017

27. 280 GHz Focal Plane Unit Design and Characterization for the SPIDER-2 Suborbital Polarimeter

Author

Bergman, A. S., Ade, P. A. R., Akers, S., Amiri, M., Austermann, J. A., Beall, J. A., Becker, D. T., Benton, S. J., Bock, J. J., Bond, J. R., Bryan, S. A., Chiang, H. C., Contaldi, C. R., Domagalski, R. S, Doré, O., Duff, S. M., Duivenvoorden, A. J., Eriksen, H. K., Farhang, M., Filippini, J. P., Fissel, L. M., Fraisse, A. A., Freese, K., Galloway, M., Gambrel, A. E., Gandilo, N. N., Ganga, K., Grigorian, A., Gualtieri, R., Gudmundsson, J. E., Halpern, M., Hartley, J., Hasselfield, M., Hilton, G., Holmes, W., Hristov, V. V., Huang, Z., Hubmayr, J., Irwin, K. D., Jones, W. C., Khan, A., Kuo, C. L., Kermish, Z. D., Li, S., Mason, P. V., Megerian, K., Moncelsi, L., Morford, T. A., Nagy, J. M., Netterfield, C. B., Nolta, M., Osherson, B., Padilla, I. L., Racine, B., Rahlin, A. S., Redmond, S., Reintsema, C., Romualdez, L. J., Ruhl, J. E., Runyan, M. C., Ruud, T. M., Shariff, J. A., Shaw, E. C., Shiu, C., Soler, J. D., Song, X., Trangsrud, A., Tucker, C., Tucker, R. S., Turner, A. D., Ullom, J., van der List, J. F., Van Lanen, J., Vissers, M. R., Weber, A. C., Wehus, I. K., Wen, S., Wiebe, D. V., and Young, E. Y.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Physics - Instrumentation and Detectors
Abstract

We describe the construction and characterization of the 280 GHz bolometric focal plane units (FPUs) to be deployed on the second flight of the balloon-borne SPIDER instrument. These FPUs are vital to SPIDER's primary science goal of detecting or placing an upper limit on the amplitude of the primordial gravitational wave signature in the cosmic microwave background (CMB) by constraining the B-mode contamination in the CMB from Galactic dust emission. Each 280 GHz focal plane contains a 16 x 16 grid of corrugated silicon feedhorns coupled to an array of aluminum-manganese transition-edge sensor (TES) bolometers fabricated on 150 mm diameter substrates. In total, the three 280 GHz FPUs contain 1,530 polarization sensitive bolometers (765 spatial pixels) optimized for the low loading environment in flight and read out by time-division SQUID multiplexing. In this paper we describe the mechanical, thermal, and magnetic shielding architecture of the focal planes and present cryogenic measurements which characterize yield and the uniformity of several bolometer parameters. The assembled FPUs have high yields, with one array as high as 95% including defects from wiring and readout. We demonstrate high uniformity in device parameters, finding the median saturation power for each TES array to be ~3 pW at 300 mK with a less than 6% variation across each array at one standard deviation. These focal planes will be deployed alongside the 95 and 150 GHz telescopes in the SPIDER-2 instrument, slated to fly from McMurdo Station in Antarctica in December 2018.

Published
2017
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28. Cryogenic LED pixel-to-frequency mapper for kinetic inductance detector arrays

Author

Liu, X., Guo, W., Wang, Y., Wei, L. F., Mckenney, C. M., Dober, B., Billings, T., Hubmayr, J., Ferreira, L. S., Vissers, M. R., and Gao, J.

Subjects
Physics - Instrumentation and Detectors, Condensed Matter - Mesoscale and Nanoscale Physics, Physics - Applied Physics
Abstract

We present a cryogenic wafer mapper based on light emitting diodes (LEDs) for spatial mapping of a large microwave kinetic inductance detector (MKID) array. In this scheme, an array of LEDs, addressed by DC wires and collimated through horns onto the detectors, is mounted in front of the detector wafer. By illuminating each LED individually and sweeping the frequency response of all the resonators, we can unambiguously correspond a detector pixel to its measured resonance frequency. We have demonstrated mapping a 76.2 mm 90-pixel MKID array using a mapper containing 126 LEDs with 16 DC bias wires. With the frequency to pixel-position correspondence data obtained by the LED mapper, we have found a radially position-dependent frequency non-uniformity < 1.6% over the 76.2 mm wafer. Our LED wafer mapper has no moving parts and is easy to implement. It may find broad applications in superconducting detector and quantum computing/information experiments., Comment: accepted by J. Appl. Phys. 2017

Published
2017
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29. Counting Near Infrared Photons with Microwave Kinetic Inductance Detectors

Author

Guo, W., Liu, X., Wang, Y., Wei, Q., Wei, L. F., Hubmayr, J., Fowler, J., Ullom, J., Vale, L., Vissers, M. R., and Gao, J.

Subjects
Physics - Instrumentation and Detectors, Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

We demonstrate photon counting at 1550 nm wavelength using microwave kinetic inductance detectors (MKIDs) made from TiN/Ti/TiN trilayer films with superconducting transition temperature Tc ~ 1.4 K. The detectors have a lumped-element design with a large interdigitated capacitor (IDC) covered by aluminum and inductive photon absorbers whose volume ranges from 0.4 um^3 to 20 um^3. We find that the energy resolution improves as the absorber volume is reduced. We have achieved an energy resolution of 0.22 eV and resolved up to 7 photons per pulse, both greatly improved from previously reported results at 1550 nm wavelength using MKIDs. Further improvements are possible by optimizing the optical coupling to maximize photon absorption into the inductive absorber., Comment: accepted by Applied Physics Letter

Published
2017
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30. Optical Demonstration of THz, Dual-Polarization Sensitive Microwave Kinetic Inductance Detectors

Author

Dober, B., Austermann, J. A., Beall, J. A., Becker, D., Che, G., Cho, H. M., Devlin, M., Duff, S. M., Galitzki, N., Gao, J., Groppi, C., Hilton, G. C., Hubmayr, J., Irwin, K. D., McKenney, C. M., Li, D., Lourie, N., Mauskopf, P., Vissers, M. R., and Wang, Y.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The next generation BLAST experiment (BLAST-TNG) is a suborbital balloon payload that seeks to map polarized dust emission in the 250 $\mu$m, 350 $\mu$m and 500 $\mu$m wavebands. The instrument utilizes a stepped half-wave plate to reduce systematics. The general requirement of the detectors is that they are photon-noise-limited and dual-polarization sensitive. To achieve this goal, we are developing three monolithic arrays of cryogenic sensors, one for each waveband. Each array is feedhorn-coupled and each spatial pixel consists of two orthogonally spaced polarization-sensitive microwave kinetic inductance detectors (MKIDs) fabricated from a Ti/TiN multilayer film. In previous work, we demonstrated photon-noise-limited sensitivity in 250 $\mu$m waveband single polarization devices. In this work, we present the first results of dual-polarization sensitive MKIDs at 250 $\mu$m., Comment: 7 pages, 4 figures, published by JLTP

Published
2016
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31. Kinetic Inductance Traveling Wave Amplifier Designs for Practical Microwave Readout Applications

Author

Giachero, A, Vissers, M, Wheeler, J, Howe, L, Gao, J, Austermann, J, Hubmayr, J, Nucciotti, A, Ullom, J, Giachero, A, Vissers, M, Wheeler, J, Howe, L, Gao, J, Austermann, J, Hubmayr, J, Nucciotti, A, and Ullom, J

Abstract

A Kinetic Inductance Traveling Wave Amplifier (KIT) utilizes the nonlinear kinetic inductance of superconducting films, particularly niobium titanium nitride (NbTiN), for parametric amplification. These amplifiers achieve remarkable performance in terms of gain, bandwidth, and compression power and frequently approach the quantum limit for noise. However, most KIT demonstrations have been isolated from practical device readout systems. Using a KIT as the first amplifier in the readout chain of an unoptimized microwave SQUID multiplexer coupled to a transition-edge sensor microcalorimeter, we see an initial improvement in the flux noise [1]. One challenge in KIT integration is the considerable microwave pump power required to drive the non-linearity. To address this, we have initiated efforts to reduce the pump power by using thinner NbTiN films and an inverted microstrip transmission line design. In this article, we present the new transmission line design, fabrication procedure, and initial device characterization—including gain and added noise. These devices exhibit over 10 dB of gain with a 3 dB bandwidth of approximately 5.5–7.25 GHz, a maximum practical gain of 12 dB, and typical gain ripple under 4 dB peak to peak. We observe an appreciable impedance mismatch in the NbTiN transmission line, which is likely the source of the majority of the gain ripple. Finally, we perform an initial noise characterization and demonstrate system-added noise of three quanta or less over nearly the entire 3 dB bandwidth.

Published
2024

32. Measuring a topological transition in an artificial spin 1/2 system

Author

Schroer, M. D., Kolodrubetz, M. H., Kindel, W. F., Sandberg, M., Gao, J., Vissers, M. R., Pappas, D. P., Polkovnikov, Anatoli, and Lehnert, K. W.

Subjects
Quantum Physics, Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

We present measurements of a topological property, the Chern number ($C_\mathrm{1}$), of a closed manifold in the space of two-level system Hamiltonians, where the two-level system is formed from a superconducting qubit. We manipulate the parameters of the Hamiltonian of the superconducting qubit along paths in the manifold and extract $C_\mathrm{1}$ from the nonadiabitic response of the qubit. By adjusting the manifold such that a degeneracy in the Hamiltonian passes from inside to outside the manifold, we observe a topological transition $C_\mathrm{1} = 1 \rightarrow 0$. Our measurement of $C_\mathrm{1}$ is quantized to within 2 percent on either side of the transition., Comment: 5 pages, 3 figures

Published
2014
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33. Ultra-Broadband Microwave Frequency-Comb Generation in Superconducting Resonators

Author

Erickson, R. P., Vissers, M. R., Sandberg, M., Jefferts, S. R., and Pappas, D. P.

Subjects
Condensed Matter - Superconductivity
Abstract

We have generated frequency combs spanning 0.5 to 20 GHz in superconducting half wave resonators at T=3 K. Thin films of niobium-titanium nitride enabled this development due to their low loss, high nonlinearity, low frequency dispersion, and high critical temperature. The combs nucleate as sidebands around multiples of the pump frequency. Selection rules for the allowed frequency emission are calculated using perturbation theory and the measured spectrum is shown to agree with the theory. The sideband spacing is measured to be accurate to 1 part in 10 million. The sidebands coalesce into a continuous comb structure that has been observed to cover at least 6 octaves in frequency.

Published
2014
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34. Superconducting nanowire single photon detectors fabricated from an amorphous Mo0.75Ge0.25 thin film

Author

Verma, V. B., Lita, A. E., Vissers, M. R., Marsili, F., Pappas, D. P., Mirin, R. P., and Nam, S. W.

Subjects
Condensed Matter - Superconductivity
Abstract

We present the characteristics of superconducting nanowire single photon detectors (SNSPDs) fabricated from amorphous Mo0.75Ge0.25 thin-films. Fabricated devices show a saturation of the internal detection efficiency at temperatures below 1 K, with system dark count rates below 500 counts per second. Operation in a Gifford-McMahon (GM) cryocooler at 2.5 K is possible with system detection efficiencies (SDE) exceeding 20% for SNSPDs which have not been optimized for high detection efficiency.

Published
2014
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36. Sensitivity of the Prime-Cam Instrument on the CCAT-Prime Telescope

Author

Choi, S. K., Austermann, J., Basu, K., Battaglia, N., Bertoldi, F., Chung, D. T., Cothard, N. F., Duff, S., Duell, C. J., Gallardo, P. A., Gao, J., Herter, T., Hubmayr, J., Niemack, M. D., Nikola, T., Riechers, D., Rossi, K., Stacey, G. J., Stevens, J. R., Vavagiakis, E. M., Vissers, M., and Walker, S.

Published
2020
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39. Sensitivity Modeling for LiteBIRD

Author

Hasebe, T, Ade, P, Adler, A, Allys, E, Alonso, D, Arnold, K, Auguste, D, Aumont, J, Aurlien, R, Austermann, J, Azzoni, S, Baccigalupi, C, Banday, A, Banerji, R, Barreiro, R, Bartolo, N, Basak, S, Battistelli, E, Bautista, L, Beall, J, Beck, D, Beckman, S, Benabed, K, Bermejo-Ballesteros, J, Bersanelli, M, Bonis, J, Borrill, J, Bouchet, F, Boulanger, F, Bounissou, S, Brilenkov, M, Brown, M, Bucher, M, Calabrese, E, Calvo, M, Campeti, P, Carones, A, Casas, F, Catalano, A, Challinor, A, Chan, V, Cheung, K, Chinone, Y, Cliche, J, Columbro, F, Coulton, W, Cubas, J, Cukierman, A, Curtis, D, D'Alessandro, G, Dachlythra, K, de Bernardis, P, de Haan, T, dela Hoz, E, De Petris, M, Torre, S, Dickinson, C, Diego-Palazuelos, P, Dobbs, M, Dotani, T, Douillet, D, Duband, L, Ducout, A, Duff, S, Duval, J, Ebisawa, K, Elleflot, T, Eriksen, H, Errard, J, Essinger-Hileman, T, Finelli, F, Flauger, R, Franceschet, C, Fuskeland, U, Galli, S, Galloway, M, Ganga, K, Gao, J, Genova-Santos, R, Gerbino, M, Gervasi, M, Ghigna, T, Giardiello, S, Gjerlow, E, Gradziel, M, Grain, J, Grandsire, L, Grupp, F, Gruppuso, A, Gudmundsson, J, Halverson, N, Hamilton, J, Hargrave, P, Hasegawa, M, Hattori, M, Hazumi, M, Henrot-Versille, S, Hergt, L, Herman, D, Herranz, D, Hill, C, Hilton, G, Hivon, E, Hlozek, R, Hoang, T, Hornsby, A, Hoshino, Y, Hubmayr, J, Ichiki, K, Iida, T, Imada, H, Ishimura, K, Ishino, H, Jaehnig, G, Jones, M, Kaga, T, Kashima, S, Katayama, N, Kato, A, Kawasaki, T, Keskitalo, R, Kisner, T, Kobayashi, Y, Kogiso, N, Kogut, A, Kohri, K, Komatsu, E, Komatsu, K, Konishi, K, Krachmalnicoff, N, Kreykenbohm, I, Kuo, C, Kushino, A, Lamagna, L, Lanen, J, Laquaniello, G, Lattanzi, M, Lee, A, Leloup, C, Levrier, F, Linder, E, Louis, T, Luzzi, G, Macias-Perez, J, Maciaszek, T, Maffei, B, Maino, D, Maki, M, Mandelli, S, Maris, M, Martinez-Gonzalez, E, Masi, S, Massa, M, Matarrese, S, Matsuda, F, Matsumura, T, Mele, L, Mennella, A, Migliaccio, M, Minami, Y, Mitsuda, K, Moggi, A, Monfardini, A, Montgomery, J, Montier, L, Morgante, G, Mot, B, Murata, Y, Murphy, J, Nagai, M, Nagano, Y, Nagasaki, T, Nagata, R, Nakamura, S, Nakano, R, Namikawa, T, Nati, F, Natoli, P, Nerval, S, Nishibori, T, Nishino, H, Noviello, F, O'Sullivan, C, Odagiri, K, Ogawa, H, Oguri, S, Ohsaki, H, Ohta, I, Okada, N, Pagano, L, Paiella, A, Paoletti, D, Passerini, A, Patanchon, G, Pelgrim, V, Peloton, J, Piacentini, F, Piat, M, Pisano, G, Polenta, G, Poletti, D, Prouve, T, Puglisi, G, Rambaud, D, Raum, C, Realini, S, Reinecke, M, Remazeilles, M, Ritacco, A, Roudil, G, Rubino-Martin, J, Russell, M, Sakurai, H, Sakurai, Y, Sandri, M, Sasaki, M, Savini, G, Scott, D, Seibert, J, Sekimoto, Y, Sherwin, B, Shinozaki, K, Shiraishi, M, Shirron, P, Signorelli, G, Smecher, G, Spinella, F, Stever, S, Stompor, R, Sugiyama, S, Sullivan, R, Suzuki, A, Suzuki, J, Svalheim, T, Switzer, E, Takaku, R, Takakura, H, Takakura, S, Takase, Y, Takeda, Y, Tartari, A, Tavagnacco, D, Taylor, A, Taylor, E, Terao, Y, Thermeau, J, Thommesen, H, Thompson, K, Thorne, B, Toda, T, Tomasi, M, Tominaga, M, Trappe, N, Tristram, M, Tsuji, M, Tsujimoto, M, Tucker, C, Ullom, J, Vacher, L, Vermeulen, G, Vielva, P, Villa, F, Vissers, M, Vittorio, N, Wandelt, B, Wang, W, Watanuki, K, Wehus, I, Weller, J, Westbrook, B, Wilms, J, Winter, B, Wollack, E, Yamasaki, N, Yoshida, T, Yumoto, J, Zacchei, A, Zannoni, M, Zonca, A, Hasebe T., Ade P. A. R., Adler A., Allys E., Alonso D., Arnold K., Auguste D., Aumont J., Aurlien R., Austermann J., Azzoni S., Baccigalupi C., Banday A. J., Banerji R., Barreiro R. B., Bartolo N., Basak S., Battistelli E., Bautista L., Beall J., Beck D., Beckman S., Benabed K., Bermejo-Ballesteros J., Bersanelli M., Bonis J., Borrill J., Bouchet F., Boulanger F., Bounissou S., Brilenkov M., Brown M. L., Bucher M., Calabrese E., Calvo M., Campeti P., Carones A., Casas F. J., Catalano A., Challinor A., Chan V., Cheung K., Chinone Y., Cliche J., Columbro F., Coulton W., Cubas J., Cukierman A., Curtis D., D'Alessandro G., Dachlythra K., de Bernardis P., de Haan T., dela Hoz E., De Petris M., Torre S. D., Dickinson C., Diego-Palazuelos P., Dobbs M., Dotani T., Douillet D., Duband L., Ducout A., Duff S., Duval J. M., Ebisawa K., Elleflot T., Eriksen H. K., Errard J., Essinger-Hileman T., Finelli F., Flauger R., Franceschet C., Fuskeland U., Galli S., Galloway M., Ganga K., Gao J. R., Genova-Santos R. T., Gerbino M., Gervasi M., Ghigna T., Giardiello S., Gjerlow E., Gradziel M. L., Grain J., Grandsire L., Grupp F., Gruppuso A., Gudmundsson J. E., Halverson N. W., Hamilton J., Hargrave P., Hasegawa M., Hattori M., Hazumi M., Henrot-Versille S., Hergt L. T., Herman D., Herranz D., Hill C. A., Hilton G., Hivon E., Hlozek R. A., Hoang T. D., Hornsby A. L., Hoshino Y., Hubmayr J., Ichiki K., Iida T., Imada H., Ishimura K., Ishino H., Jaehnig G., Jones M., Kaga T., Kashima S., Katayama N., Kato A., Kawasaki T., Keskitalo R., Kisner T., Kobayashi Y., Kogiso N., Kogut A., Kohri K., Komatsu E., Komatsu K., Konishi K., Krachmalnicoff N., Kreykenbohm I., Kuo C. L., Kushino A., Lamagna L., Lanen J. V., Laquaniello G., Lattanzi M., Lee A. T., Leloup C., Levrier F., Linder E., Louis T., Luzzi G., Macias-Perez J., Maciaszek T., Maffei B., Maino D., Maki M., Mandelli S., Maris M., Martinez-Gonzalez E., Masi S., Massa M., Matarrese S., Matsuda F. T., Matsumura T., Mele L., Mennella A., Migliaccio M., Minami Y., Mitsuda K., Moggi A., Monfardini A., Montgomery J., Montier L., Morgante G., Mot B., Murata Y., Murphy J. A., Nagai M., Nagano Y., Nagasaki T., Nagata R., Nakamura S., Nakano R., Namikawa T., Nati F., Natoli P., Nerval S., Nishibori T., Nishino H., Noviello F., O'Sullivan C., Odagiri K., Ogawa H., Oguri S., Ohsaki H., Ohta I. S., Okada N., Pagano L., Paiella A., Paoletti D., Passerini A., Patanchon G., Pelgrim V., Peloton J., Piacentini F., Piat M., Pisano G., Polenta G., Poletti D., Prouve T., Puglisi G., Rambaud D., Raum C., Realini S., Reinecke M., Remazeilles M., Ritacco A., Roudil G., Rubino-Martin J., Russell M., Sakurai H., Sakurai Y., Sandri M., Sasaki M., Savini G., Scott D., Seibert J., Sekimoto Y., Sherwin B., Shinozaki K., Shiraishi M., Shirron P., Signorelli G., Smecher G., Spinella F., Stever S., Stompor R., Sugiyama S., Sullivan R., Suzuki A., Suzuki J., Svalheim T. L., Switzer E., Takaku R., Takakura H., Takakura S., Takase Y., Takeda Y., Tartari A., Tavagnacco D., Taylor A., Taylor E., Terao Y., Thermeau J., Thommesen H., Thompson K. L., Thorne B., Toda T., Tomasi M., Tominaga M., Trappe N., Tristram M., Tsuji M., Tsujimoto M., Tucker C., Ullom J., Vacher L., Vermeulen G., Vielva P., Villa F., Vissers M., Vittorio N., Wandelt B., Wang W., Watanuki K., Wehus I. K., Weller J., Westbrook B., Wilms J., Winter B., Wollack E. J., Yamasaki N. Y., Yoshida T., Yumoto J., Zacchei A., Zannoni M., Zonca A., Hasebe, T, Ade, P, Adler, A, Allys, E, Alonso, D, Arnold, K, Auguste, D, Aumont, J, Aurlien, R, Austermann, J, Azzoni, S, Baccigalupi, C, Banday, A, Banerji, R, Barreiro, R, Bartolo, N, Basak, S, Battistelli, E, Bautista, L, Beall, J, Beck, D, Beckman, S, Benabed, K, Bermejo-Ballesteros, J, Bersanelli, M, Bonis, J, Borrill, J, Bouchet, F, Boulanger, F, Bounissou, S, Brilenkov, M, Brown, M, Bucher, M, Calabrese, E, Calvo, M, Campeti, P, Carones, A, Casas, F, Catalano, A, Challinor, A, Chan, V, Cheung, K, Chinone, Y, Cliche, J, Columbro, F, Coulton, W, Cubas, J, Cukierman, A, Curtis, D, D'Alessandro, G, Dachlythra, K, de Bernardis, P, de Haan, T, dela Hoz, E, De Petris, M, Torre, S, Dickinson, C, Diego-Palazuelos, P, Dobbs, M, Dotani, T, Douillet, D, Duband, L, Ducout, A, Duff, S, Duval, J, Ebisawa, K, Elleflot, T, Eriksen, H, Errard, J, Essinger-Hileman, T, Finelli, F, Flauger, R, Franceschet, C, Fuskeland, U, Galli, S, Galloway, M, Ganga, K, Gao, J, Genova-Santos, R, Gerbino, M, Gervasi, M, Ghigna, T, Giardiello, S, Gjerlow, E, Gradziel, M, Grain, J, Grandsire, L, Grupp, F, Gruppuso, A, Gudmundsson, J, Halverson, N, Hamilton, J, Hargrave, P, Hasegawa, M, Hattori, M, Hazumi, M, Henrot-Versille, S, Hergt, L, Herman, D, Herranz, D, Hill, C, Hilton, G, Hivon, E, Hlozek, R, Hoang, T, Hornsby, A, Hoshino, Y, Hubmayr, J, Ichiki, K, Iida, T, Imada, H, Ishimura, K, Ishino, H, Jaehnig, G, Jones, M, Kaga, T, Kashima, S, Katayama, N, Kato, A, Kawasaki, T, Keskitalo, R, Kisner, T, Kobayashi, Y, Kogiso, N, Kogut, A, Kohri, K, Komatsu, E, Komatsu, K, Konishi, K, Krachmalnicoff, N, Kreykenbohm, I, Kuo, C, Kushino, A, Lamagna, L, Lanen, J, Laquaniello, G, Lattanzi, M, Lee, A, Leloup, C, Levrier, F, Linder, E, Louis, T, Luzzi, G, Macias-Perez, J, Maciaszek, T, Maffei, B, Maino, D, Maki, M, Mandelli, S, Maris, M, Martinez-Gonzalez, E, Masi, S, Massa, M, Matarrese, S, Matsuda, F, Matsumura, T, Mele, L, Mennella, A, Migliaccio, M, Minami, Y, Mitsuda, K, Moggi, A, Monfardini, A, Montgomery, J, Montier, L, Morgante, G, Mot, B, Murata, Y, Murphy, J, Nagai, M, Nagano, Y, Nagasaki, T, Nagata, R, Nakamura, S, Nakano, R, Namikawa, T, Nati, F, Natoli, P, Nerval, S, Nishibori, T, Nishino, H, Noviello, F, O'Sullivan, C, Odagiri, K, Ogawa, H, Oguri, S, Ohsaki, H, Ohta, I, Okada, N, Pagano, L, Paiella, A, Paoletti, D, Passerini, A, Patanchon, G, Pelgrim, V, Peloton, J, Piacentini, F, Piat, M, Pisano, G, Polenta, G, Poletti, D, Prouve, T, Puglisi, G, Rambaud, D, Raum, C, Realini, S, Reinecke, M, Remazeilles, M, Ritacco, A, Roudil, G, Rubino-Martin, J, Russell, M, Sakurai, H, Sakurai, Y, Sandri, M, Sasaki, M, Savini, G, Scott, D, Seibert, J, Sekimoto, Y, Sherwin, B, Shinozaki, K, Shiraishi, M, Shirron, P, Signorelli, G, Smecher, G, Spinella, F, Stever, S, Stompor, R, Sugiyama, S, Sullivan, R, Suzuki, A, Suzuki, J, Svalheim, T, Switzer, E, Takaku, R, Takakura, H, Takakura, S, Takase, Y, Takeda, Y, Tartari, A, Tavagnacco, D, Taylor, A, Taylor, E, Terao, Y, Thermeau, J, Thommesen, H, Thompson, K, Thorne, B, Toda, T, Tomasi, M, Tominaga, M, Trappe, N, Tristram, M, Tsuji, M, Tsujimoto, M, Tucker, C, Ullom, J, Vacher, L, Vermeulen, G, Vielva, P, Villa, F, Vissers, M, Vittorio, N, Wandelt, B, Wang, W, Watanuki, K, Wehus, I, Weller, J, Westbrook, B, Wilms, J, Winter, B, Wollack, E, Yamasaki, N, Yoshida, T, Yumoto, J, Zacchei, A, Zannoni, M, Zonca, A, Hasebe T., Ade P. A. R., Adler A., Allys E., Alonso D., Arnold K., Auguste D., Aumont J., Aurlien R., Austermann J., Azzoni S., Baccigalupi C., Banday A. J., Banerji R., Barreiro R. B., Bartolo N., Basak S., Battistelli E., Bautista L., Beall J., Beck D., Beckman S., Benabed K., Bermejo-Ballesteros J., Bersanelli M., Bonis J., Borrill J., Bouchet F., Boulanger F., Bounissou S., Brilenkov M., Brown M. L., Bucher M., Calabrese E., Calvo M., Campeti P., Carones A., Casas F. J., Catalano A., Challinor A., Chan V., Cheung K., Chinone Y., Cliche J., Columbro F., Coulton W., Cubas J., Cukierman A., Curtis D., D'Alessandro G., Dachlythra K., de Bernardis P., de Haan T., dela Hoz E., De Petris M., Torre S. D., Dickinson C., Diego-Palazuelos P., Dobbs M., Dotani T., Douillet D., Duband L., Ducout A., Duff S., Duval J. M., Ebisawa K., Elleflot T., Eriksen H. K., Errard J., Essinger-Hileman T., Finelli F., Flauger R., Franceschet C., Fuskeland U., Galli S., Galloway M., Ganga K., Gao J. R., Genova-Santos R. T., Gerbino M., Gervasi M., Ghigna T., Giardiello S., Gjerlow E., Gradziel M. L., Grain J., Grandsire L., Grupp F., Gruppuso A., Gudmundsson J. E., Halverson N. W., Hamilton J., Hargrave P., Hasegawa M., Hattori M., Hazumi M., Henrot-Versille S., Hergt L. T., Herman D., Herranz D., Hill C. A., Hilton G., Hivon E., Hlozek R. A., Hoang T. D., Hornsby A. L., Hoshino Y., Hubmayr J., Ichiki K., Iida T., Imada H., Ishimura K., Ishino H., Jaehnig G., Jones M., Kaga T., Kashima S., Katayama N., Kato A., Kawasaki T., Keskitalo R., Kisner T., Kobayashi Y., Kogiso N., Kogut A., Kohri K., Komatsu E., Komatsu K., Konishi K., Krachmalnicoff N., Kreykenbohm I., Kuo C. L., Kushino A., Lamagna L., Lanen J. V., Laquaniello G., Lattanzi M., Lee A. T., Leloup C., Levrier F., Linder E., Louis T., Luzzi G., Macias-Perez J., Maciaszek T., Maffei B., Maino D., Maki M., Mandelli S., Maris M., Martinez-Gonzalez E., Masi S., Massa M., Matarrese S., Matsuda F. T., Matsumura T., Mele L., Mennella A., Migliaccio M., Minami Y., Mitsuda K., Moggi A., Monfardini A., Montgomery J., Montier L., Morgante G., Mot B., Murata Y., Murphy J. A., Nagai M., Nagano Y., Nagasaki T., Nagata R., Nakamura S., Nakano R., Namikawa T., Nati F., Natoli P., Nerval S., Nishibori T., Nishino H., Noviello F., O'Sullivan C., Odagiri K., Ogawa H., Oguri S., Ohsaki H., Ohta I. S., Okada N., Pagano L., Paiella A., Paoletti D., Passerini A., Patanchon G., Pelgrim V., Peloton J., Piacentini F., Piat M., Pisano G., Polenta G., Poletti D., Prouve T., Puglisi G., Rambaud D., Raum C., Realini S., Reinecke M., Remazeilles M., Ritacco A., Roudil G., Rubino-Martin J., Russell M., Sakurai H., Sakurai Y., Sandri M., Sasaki M., Savini G., Scott D., Seibert J., Sekimoto Y., Sherwin B., Shinozaki K., Shiraishi M., Shirron P., Signorelli G., Smecher G., Spinella F., Stever S., Stompor R., Sugiyama S., Sullivan R., Suzuki A., Suzuki J., Svalheim T. L., Switzer E., Takaku R., Takakura H., Takakura S., Takase Y., Takeda Y., Tartari A., Tavagnacco D., Taylor A., Taylor E., Terao Y., Thermeau J., Thommesen H., Thompson K. L., Thorne B., Toda T., Tomasi M., Tominaga M., Trappe N., Tristram M., Tsuji M., Tsujimoto M., Tucker C., Ullom J., Vacher L., Vermeulen G., Vielva P., Villa F., Vissers M., Vittorio N., Wandelt B., Wang W., Watanuki K., Wehus I. K., Weller J., Westbrook B., Wilms J., Winter B., Wollack E. J., Yamasaki N. Y., Yoshida T., Yumoto J., Zacchei A., Zannoni M., and Zonca A.

Abstract

LiteBIRD is a future satellite mission designed to observe the polarization of the cosmic microwave background radiation in order to probe the inflationary universe. LiteBIRD is set to observe the sky using three telescopes with transition-edge sensor bolometers. In this work we estimated the LiteBIRD instrumental sensitivity using its current design. We estimated the detector noise due to the optical loadings using physical optics and ray-tracing simulations. The noise terms associated with thermal carrier and readout noise were modeled in the detector noise calculation. We calculated the observational sensitivities over fifteen bands designed for the LiteBIRD telescopes using assumed observation time efficiency.

Published
2023

40. Improved superconducting qubit coherence using titanium nitride

Author

Chang, J., Vissers, M. R., Corcoles, A. D., Sandberg, M., Gao, J., Abraham, David W., Chow, Jerry M., Gambetta, Jay M., Rothwell, M. B., Keefe, G. A., Steffen, Matthias, and Pappas, D. P.

Subjects
Quantum Physics, Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Superconductivity
Abstract

We demonstrate enhanced relaxation and dephasing times of transmon qubits, up to ~ 60 \mu s by fabricating the interdigitated shunting capacitors using titanium nitride (TiN). Compared to lift-off aluminum deposited simultaneously with the Josephson junction, this represents as much as a six-fold improvement and provides evidence that previous planar transmon coherence times are limited by surface losses from two-level system (TLS) defects residing at or near interfaces. Concurrently, we observe an anomalous temperature dependent frequency shift of TiN resonators which is inconsistent with the predicted TLS model., Comment: 3 figures

Published
2013
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42. 280 GHz Focal Plane Unit Design and Characterization for the Spider-2 Suborbital Polarimeter

Author

Bergman, A. S., Ade, P. A. R., Akers, S., Amiri, M., Austermann, J. A., Beall, J. A., Becker, D. T., Benton, S. J., Bock, J. J., Bond, J. R., Bryan, S. A., Chiang, H. C., Contaldi, C. R., Domagalski, R. S, Doré, O., Duff, S. M., Duivenvoorden, A. J., Eriksen, H. K., Farhang, M., Filippini, J. P., Fissel, L. M., Fraisse, A. A., Freese, K., Galloway, M., Gambrel, A. E., Gandilo, N. N., Ganga, K., Grigorian, A., Gualtieri, R., Gudmundsson, J. E., Halpern, M., Hartley, J., Hasselfield, M., Hilton, G., Holmes, W., Hristov, V. V., Huang, Z., Hubmayr, J., Irwin, K. D., Jones, W. C., Khan, A., Kuo, C. L., Kermish, Z. D., Li, S., Mason, P. V., Megerian, K., Moncelsi, L., Morford, T. A., Nagy, J. M., Netterfield, C. B., Nolta, M., Osherson, B., Padilla, I. L., Racine, B., Rahlin, A. S., Redmond, S., Reintsema, C., Romualdez, L. J., Ruhl, J. E., Runyan, M. C., Ruud, T. M., Shariff, J. A., Shaw, E. C., Shiu, C., Soler, J. D., Song, X., Trangsrud, A., Tucker, C., Tucker, R. S., Turner, A. D., Ullom, J., van der List, J. F., Van Lanen, J., Vissers, M. R., Weber, A. C., Wehus, I. K., Wen, S., Wiebe, D. V., and Young, E. Y.

Published
2018
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43. Optical Characterization of OMT-Coupled TES Bolometers for LiteBIRD

Author

Hubmayr, J, Ade, P, Adler, A, Allys, E, Alonso, D, Arnold, K, Auguste, D, Aumont, J, Aurlien, R, Austermann, J, Azzoni, S, Baccigalupi, C, Banday, A, Banerji, R, Barreiro, R, Bartolo, N, Basak, S, Battistelli, E, Bautista, L, Beall, J, Beck, D, Beckman, S, Benabed, K, Bermejo-Ballesteros, J, Bersanelli, M, Bonis, J, Borrill, J, Bouchet, F, Boulanger, F, Bounissou, S, Brilenkov, M, Brown, M, Bucher, M, Calabrese, E, Calvo, M, Campeti, P, Carones, A, Casas, F, Catalano, A, Challinor, A, Chan, V, Cheung, K, Chinone, Y, Chiocchetta, C, Clark, S, Clermont, L, Clesse, S, Cliche, J, Columbro, F, Connors, J, Coppolecchia, A, Coulton, W, Cubas, J, Cukierman, A, Curtis, D, Cuttaia, F, D’Alessandro, G, Dachlythra, K, de Bernardis, P, de Haan, T, de la Hoz, E, De Petris, M, Della Torre, S, Daz Garca, J, Dickinson, C, Diego-Palazuelos, P, Dobbs, M, Dotani, T, Douillet, D, Doumayrou, E, Duband, L, Ducout, A, Duff, S, Duval, J, Ebisawa, K, Elleflot, T, Eriksen, H, Errard, J, Essinger-Hileman, T, Farrens, S, Finelli, F, Flauger, R, Fleury-Frenette, K, Franceschet, C, Fuskeland, U, Galli, L, Galli, S, Galloway, M, Ganga, K, Gao, J, Genova-Santos, R, Georges, M, Gerbino, M, Gervasi, M, Ghigna, T, Giardiello, S, Gjerlw, E, Gonzles, R, Gradziel, M, Grain, J, Grandsire, L, Grupp, F, Gruppuso, A, Gudmundsson, J, Halverson, N, Hamilton, J, Hargrave, P, Hasebe, T, Hasegawa, M, Hattori, M, Hazumi, M, Henrot-Versill, S, Hensley, B, Herman, D, Herranz, D, Hilton, G, Hivon, E, Hlozek, R, Hoang, D, Hornsby, A, Hoshino, Y, Ichiki, K, Iida, T, Ikemoto, T, Imada, H, Ishimura, K, Ishino, H, Jaehnig, G, Jones, M, Kaga, T, Kashima, S, Katayama, N, Kato, A, Kawasaki, T, Keskitalo, R, Kintziger, C, Kisner, T, Kobayashi, Y, Kogiso, N, Kogut, A, Kohri, K, Komatsu, E, Komatsu, K, Konishi, K, Krachmalnicoff, N, Kreykenbohm, I, Kuo, C, Kushino, A, Lamagna, L, Lanen, J, Laquaniello, G, Lattanzi, M, Lee, A, Leloup, C, Levrier, F, Linder, E, Link, M, Lonappan, A, Louis, T, Luzzi, G, Macias-Perez, J, Maciaszek, T, Maffei, B, Maino, D, Maki, M, Mandelli, S, Maris, M, Marquet, B, Martnez-Gonzlez, E, Martire, F, Masi, S, Massa, M, Masuzawa, M, Matarrese, S, Matsuda, F, Matsumura, T, Mele, L, Mennella, A, Migliaccio, M, Minami, Y, Mitsuda, K, Moggi, A, Monelli, M, Monfardini, A, Montgomery, J, Montier, L, Morgante, G, Mot, B, Murata, Y, Murphy, J, Nagai, M, Nagano, Y, Nagasaki, T, Nagata, R, Nakamura, S, Nakano, R, Namikawa, T, Nati, F, Natoli, P, Nerval, S, Neto Godry Farias, N, Nishibori, T, Nishino, H, Noviello, F, O’Neil, G, O’Sullivan, C, Odagiri, K, Ochi, H, Ogawa, H, Oguri, S, Ohsaki, H, Ohta, I, Okada, N, Pagano, L, Paiella, A, Paoletti, D, Pascual Cisneros, G, Passerini, A, Patanchon, G, Pelgrim, V, Peloton, J, Pettorino, V, Piacentini, F, Piat, M, Piccirilli, G, Pinsard, F, Pisano, G, Plesseria, J, Polenta, G, Poletti, D, Prouv, T, Puglisi, G, Rambaud, D, Raum, C, Realini, S, Reinecke, M, Reintsema, C, Remazeilles, M, Ritacco, A, Rosier, P, Roudil, G, Rubino-Martin, J, Russell, M, Sakurai, H, Sakurai, Y, Sandri, M, Sasaki, M, Savini, G, Scott, D, Seibert, J, Sekimoto, Y, Sherwin, B, Shinozaki, K, Shiraishi, M, Shirron, P, Shitvov, A, Signorelli, G, Smecher, G, Spinella, F, Starck, J, Stever, S, Stompor, R, Sudiwala, R, Sugiyama, S, Sullivan, R, Suzuki, A, Suzuki, J, Suzuki, T, Svalheim, T, Switzer, E, Takaku, R, Takakura, H, Takakura, S, Takase, Y, Takeda, Y, Tartari, A, Tavagnacco, D, Taylor, A, Taylor, E, Terao, Y, Terenzi, L, Thermeau, J, Thommesen, H, Thompson, K, Thorne, B, Toda, T, Tomasi, M, Tominaga, M, Trappe, N, Tristram, M, Tsuji, M, Tsujimoto, M, Tucker, C, Ueki, R, Ullom, J, Umemori, K, Vacher, L, Van Lanen, J, Vermeulen, G, Vielva, P, Villa, F, Vissers, M, Vittorio, N, Wandelt, B, Wang, W, Wehus, I, Weller, J, Westbrook, B, Weymann-Despres, G, Wilms, J, Winter, B, Wollack, E, Yamasaki, N, Yoshida, T, Yumoto, J, Watanuki, K, Zacchei, A, Zannoni, M, Zonca, A, Hubmayr, J., Ade, P. A. R., Adler, A., Allys, E., Alonso, D., Arnold, K., Auguste, D., Aumont, J., Aurlien, R., Austermann, J. E., Azzoni, S., Baccigalupi, C., Banday, A. J., Banerji, R., Barreiro, R. B., Bartolo, N., Basak, S., Battistelli, E., Bautista, L., Beall, J. A., Beck, D., Beckman, S., Benabed, K., Bermejo-Ballesteros, J., Bersanelli, M., Bonis, J., Borrill, J., Bouchet, F., Boulanger, F., Bounissou, S., Brilenkov, M., Brown, M. L., Bucher, M., Calabrese, E., Calvo, M., Campeti, P., Carones, A., Casas, F. J., Catalano, A., Challinor, A., Chan, V., Cheung, K., Chinone, Y., Chiocchetta, C., Clark, S. E., Clermont, L., Clesse, S., Cliche, J., Columbro, F., Connors, J. A., Coppolecchia, A., Coulton, W., Cubas, J., Cukierman, A., Curtis, D., Cuttaia, F., D’Alessandro, G., Dachlythra, K., de Bernardis, P., de Haan, T., de la Hoz, E., De Petris, M., Della Torre, S., Daz Garca, J. J., Dickinson, C., Diego-Palazuelos, P., Dobbs, M., Dotani, T., Douillet, D., Doumayrou, E., Duband, L., Ducout, A., Duff, S. M., Duval, J. M., Ebisawa, K., Elleflot, T., Eriksen, H. K., Errard, J., Essinger-Hileman, T., Farrens, S., Finelli, F., Flauger, R., Fleury-Frenette, K., Franceschet, C., Fuskeland, U., Galli, L., Galli, S., Galloway, M., Ganga, K., Gao, J. R., Genova-Santos, R. T., Georges, M., Gerbino, M., Gervasi, M., Ghigna, T., Giardiello, S., Gjerlw, E., Gonzles, R. Gonzlez, Gradziel, M. L., Grain, J., Grandsire, L., Grupp, F., Gruppuso, A., Gudmundsson, J. E., Halverson, N. W., Hamilton, J., Hargrave, P., Hasebe, T., Hasegawa, M., Hattori, M., Hazumi, M., Henrot-Versill, S., Hensley, B., Herman, D., Herranz, D., Hilton, G. C., Hivon, E., Hlozek, R. A., Hoang, D., Hornsby, A. L., Hoshino, Y., Ichiki, K., Iida, T., Ikemoto, T., Imada, H., Ishimura, K., Ishino, H., Jaehnig, G., Jones, M., Kaga, T., Kashima, S., Katayama, N., Kato, A., Kawasaki, T., Keskitalo, R., Kintziger, C., Kisner, T., Kobayashi, Y., Kogiso, N., Kogut, A., Kohri, K., Komatsu, E., Komatsu, K., Konishi, K., Krachmalnicoff, N., Kreykenbohm, I., Kuo, C. L., Kushino, A., Lamagna, L., Lanen, J. V., Laquaniello, G., Lattanzi, M., Lee, A. T., Leloup, C., Levrier, F., Linder, E., Link, M. J., Lonappan, A. I., Louis, T., Luzzi, G., Macias-Perez, J., Maciaszek, T., Maffei, B., Maino, D., Maki, M., Mandelli, S., Maris, M., Marquet, B., Martnez-Gonzlez, E., Martire, F. A., Masi, S., Massa, M., Masuzawa, M., Matarrese, S., Matsuda, F. T., Matsumura, T., Mele, L., Mennella, A., Migliaccio, M., Minami, Y., Mitsuda, K., Moggi, A., Monelli, M., Monfardini, A., Montgomery, J., Montier, L., Morgante, G., Mot, B., Murata, Y., Murphy, J. A., Nagai, M., Nagano, Y., Nagasaki, T., Nagata, R., Nakamura, S., Nakano, R., Namikawa, T., Nati, F., Natoli, P., Nerval, S., Neto Godry Farias, N., Nishibori, T., Nishino, H., Noviello, F., O’Neil, G. C., O’Sullivan, C., Odagiri, K., Ochi, H., Ogawa, H., Oguri, S., Ohsaki, H., Ohta, I. S., Okada, N., Pagano, L., Paiella, A., Paoletti, D., Pascual Cisneros, G., Passerini, A., Patanchon, G., Pelgrim, V., Peloton, J., Pettorino, V., Piacentini, F., Piat, M., Piccirilli, G., Pinsard, F., Pisano, G., Plesseria, J., Polenta, G., Poletti, D., Prouv, T., Puglisi, G., Rambaud, D., Raum, C., Realini, S., Reinecke, M., Reintsema, C. D., Remazeilles, M., Ritacco, A., Rosier, P., Roudil, G., Rubino-Martin, J., Russell, M., Sakurai, H., Sakurai, Y., Sandri, M., Sasaki, M., Savini, G., Scott, D., Seibert, J., Sekimoto, Y., Sherwin, B., Shinozaki, K., Shiraishi, M., Shirron, P., Shitvov, A., Signorelli, G., Smecher, G., Spinella, F., Starck, J., Stever, S., Stompor, R., Sudiwala, R., Sugiyama, S., Sullivan, R., Suzuki, A., Suzuki, J., Suzuki, T., Svalheim, T. L., Switzer, E., Takaku, R., Takakura, H., Takakura, S., Takase, Y., Takeda, Y., Tartari, A., Tavagnacco, D., Taylor, A., Taylor, E., Terao, Y., Terenzi, L., Thermeau, J., Thommesen, H., Thompson, K. L., Thorne, B., Toda, T., Tomasi, M., Tominaga, M., Trappe, N., Tristram, M., Tsuji, M., Tsujimoto, M., Tucker, C., Ueki, R., Ullom, J. N., Umemori, K., Vacher, L., Van Lanen, J., Vermeulen, G., Vielva, P., Villa, F., Vissers, M. R., Vittorio, N., Wandelt, B., Wang, W., Wehus, I. K., Weller, J., Westbrook, B., Weymann-Despres, G., Wilms, J., Winter, B., Wollack, E. J., Yamasaki, N. Y., Yoshida, T., Yumoto, J., Watanuki, K., Zacchei, A., Zannoni, M., Zonca, A., Hubmayr, J, Ade, P, Adler, A, Allys, E, Alonso, D, Arnold, K, Auguste, D, Aumont, J, Aurlien, R, Austermann, J, Azzoni, S, Baccigalupi, C, Banday, A, Banerji, R, Barreiro, R, Bartolo, N, Basak, S, Battistelli, E, Bautista, L, Beall, J, Beck, D, Beckman, S, Benabed, K, Bermejo-Ballesteros, J, Bersanelli, M, Bonis, J, Borrill, J, Bouchet, F, Boulanger, F, Bounissou, S, Brilenkov, M, Brown, M, Bucher, M, Calabrese, E, Calvo, M, Campeti, P, Carones, A, Casas, F, Catalano, A, Challinor, A, Chan, V, Cheung, K, Chinone, Y, Chiocchetta, C, Clark, S, Clermont, L, Clesse, S, Cliche, J, Columbro, F, Connors, J, Coppolecchia, A, Coulton, W, Cubas, J, Cukierman, A, Curtis, D, Cuttaia, F, D’Alessandro, G, Dachlythra, K, de Bernardis, P, de Haan, T, de la Hoz, E, De Petris, M, Della Torre, S, Daz Garca, J, Dickinson, C, Diego-Palazuelos, P, Dobbs, M, Dotani, T, Douillet, D, Doumayrou, E, Duband, L, Ducout, A, Duff, S, Duval, J, Ebisawa, K, Elleflot, T, Eriksen, H, Errard, J, Essinger-Hileman, T, Farrens, S, Finelli, F, Flauger, R, Fleury-Frenette, K, Franceschet, C, Fuskeland, U, Galli, L, Galli, S, Galloway, M, Ganga, K, Gao, J, Genova-Santos, R, Georges, M, Gerbino, M, Gervasi, M, Ghigna, T, Giardiello, S, Gjerlw, E, Gonzles, R, Gradziel, M, Grain, J, Grandsire, L, Grupp, F, Gruppuso, A, Gudmundsson, J, Halverson, N, Hamilton, J, Hargrave, P, Hasebe, T, Hasegawa, M, Hattori, M, Hazumi, M, Henrot-Versill, S, Hensley, B, Herman, D, Herranz, D, Hilton, G, Hivon, E, Hlozek, R, Hoang, D, Hornsby, A, Hoshino, Y, Ichiki, K, Iida, T, Ikemoto, T, Imada, H, Ishimura, K, Ishino, H, Jaehnig, G, Jones, M, Kaga, T, Kashima, S, Katayama, N, Kato, A, Kawasaki, T, Keskitalo, R, Kintziger, C, Kisner, T, Kobayashi, Y, Kogiso, N, Kogut, A, Kohri, K, Komatsu, E, Komatsu, K, Konishi, K, Krachmalnicoff, N, Kreykenbohm, I, Kuo, C, Kushino, A, Lamagna, L, Lanen, J, Laquaniello, G, Lattanzi, M, Lee, A, Leloup, C, Levrier, F, Linder, E, Link, M, Lonappan, A, Louis, T, Luzzi, G, Macias-Perez, J, Maciaszek, T, Maffei, B, Maino, D, Maki, M, Mandelli, S, Maris, M, Marquet, B, Martnez-Gonzlez, E, Martire, F, Masi, S, Massa, M, Masuzawa, M, Matarrese, S, Matsuda, F, Matsumura, T, Mele, L, Mennella, A, Migliaccio, M, Minami, Y, Mitsuda, K, Moggi, A, Monelli, M, Monfardini, A, Montgomery, J, Montier, L, Morgante, G, Mot, B, Murata, Y, Murphy, J, Nagai, M, Nagano, Y, Nagasaki, T, Nagata, R, Nakamura, S, Nakano, R, Namikawa, T, Nati, F, Natoli, P, Nerval, S, Neto Godry Farias, N, Nishibori, T, Nishino, H, Noviello, F, O’Neil, G, O’Sullivan, C, Odagiri, K, Ochi, H, Ogawa, H, Oguri, S, Ohsaki, H, Ohta, I, Okada, N, Pagano, L, Paiella, A, Paoletti, D, Pascual Cisneros, G, Passerini, A, Patanchon, G, Pelgrim, V, Peloton, J, Pettorino, V, Piacentini, F, Piat, M, Piccirilli, G, Pinsard, F, Pisano, G, Plesseria, J, Polenta, G, Poletti, D, Prouv, T, Puglisi, G, Rambaud, D, Raum, C, Realini, S, Reinecke, M, Reintsema, C, Remazeilles, M, Ritacco, A, Rosier, P, Roudil, G, Rubino-Martin, J, Russell, M, Sakurai, H, Sakurai, Y, Sandri, M, Sasaki, M, Savini, G, Scott, D, Seibert, J, Sekimoto, Y, Sherwin, B, Shinozaki, K, Shiraishi, M, Shirron, P, Shitvov, A, Signorelli, G, Smecher, G, Spinella, F, Starck, J, Stever, S, Stompor, R, Sudiwala, R, Sugiyama, S, Sullivan, R, Suzuki, A, Suzuki, J, Suzuki, T, Svalheim, T, Switzer, E, Takaku, R, Takakura, H, Takakura, S, Takase, Y, Takeda, Y, Tartari, A, Tavagnacco, D, Taylor, A, Taylor, E, Terao, Y, Terenzi, L, Thermeau, J, Thommesen, H, Thompson, K, Thorne, B, Toda, T, Tomasi, M, Tominaga, M, Trappe, N, Tristram, M, Tsuji, M, Tsujimoto, M, Tucker, C, Ueki, R, Ullom, J, Umemori, K, Vacher, L, Van Lanen, J, Vermeulen, G, Vielva, P, Villa, F, Vissers, M, Vittorio, N, Wandelt, B, Wang, W, Wehus, I, Weller, J, Westbrook, B, Weymann-Despres, G, Wilms, J, Winter, B, Wollack, E, Yamasaki, N, Yoshida, T, Yumoto, J, Watanuki, K, Zacchei, A, Zannoni, M, Zonca, A, Hubmayr, J., Ade, P. A. R., Adler, A., Allys, E., Alonso, D., Arnold, K., Auguste, D., Aumont, J., Aurlien, R., Austermann, J. E., Azzoni, S., Baccigalupi, C., Banday, A. J., Banerji, R., Barreiro, R. B., Bartolo, N., Basak, S., Battistelli, E., Bautista, L., Beall, J. A., Beck, D., Beckman, S., Benabed, K., Bermejo-Ballesteros, J., Bersanelli, M., Bonis, J., Borrill, J., Bouchet, F., Boulanger, F., Bounissou, S., Brilenkov, M., Brown, M. L., Bucher, M., Calabrese, E., Calvo, M., Campeti, P., Carones, A., Casas, F. J., Catalano, A., Challinor, A., Chan, V., Cheung, K., Chinone, Y., Chiocchetta, C., Clark, S. E., Clermont, L., Clesse, S., Cliche, J., Columbro, F., Connors, J. A., Coppolecchia, A., Coulton, W., Cubas, J., Cukierman, A., Curtis, D., Cuttaia, F., D’Alessandro, G., Dachlythra, K., de Bernardis, P., de Haan, T., de la Hoz, E., De Petris, M., Della Torre, S., Daz Garca, J. J., Dickinson, C., Diego-Palazuelos, P., Dobbs, M., Dotani, T., Douillet, D., Doumayrou, E., Duband, L., Ducout, A., Duff, S. M., Duval, J. M., Ebisawa, K., Elleflot, T., Eriksen, H. K., Errard, J., Essinger-Hileman, T., Farrens, S., Finelli, F., Flauger, R., Fleury-Frenette, K., Franceschet, C., Fuskeland, U., Galli, L., Galli, S., Galloway, M., Ganga, K., Gao, J. R., Genova-Santos, R. T., Georges, M., Gerbino, M., Gervasi, M., Ghigna, T., Giardiello, S., Gjerlw, E., Gonzles, R. Gonzlez, Gradziel, M. L., Grain, J., Grandsire, L., Grupp, F., Gruppuso, A., Gudmundsson, J. E., Halverson, N. W., Hamilton, J., Hargrave, P., Hasebe, T., Hasegawa, M., Hattori, M., Hazumi, M., Henrot-Versill, S., Hensley, B., Herman, D., Herranz, D., Hilton, G. C., Hivon, E., Hlozek, R. A., Hoang, D., Hornsby, A. L., Hoshino, Y., Ichiki, K., Iida, T., Ikemoto, T., Imada, H., Ishimura, K., Ishino, H., Jaehnig, G., Jones, M., Kaga, T., Kashima, S., Katayama, N., Kato, A., Kawasaki, T., Keskitalo, R., Kintziger, C., Kisner, T., Kobayashi, Y., Kogiso, N., Kogut, A., Kohri, K., Komatsu, E., Komatsu, K., Konishi, K., Krachmalnicoff, N., Kreykenbohm, I., Kuo, C. L., Kushino, A., Lamagna, L., Lanen, J. V., Laquaniello, G., Lattanzi, M., Lee, A. T., Leloup, C., Levrier, F., Linder, E., Link, M. J., Lonappan, A. I., Louis, T., Luzzi, G., Macias-Perez, J., Maciaszek, T., Maffei, B., Maino, D., Maki, M., Mandelli, S., Maris, M., Marquet, B., Martnez-Gonzlez, E., Martire, F. A., Masi, S., Massa, M., Masuzawa, M., Matarrese, S., Matsuda, F. T., Matsumura, T., Mele, L., Mennella, A., Migliaccio, M., Minami, Y., Mitsuda, K., Moggi, A., Monelli, M., Monfardini, A., Montgomery, J., Montier, L., Morgante, G., Mot, B., Murata, Y., Murphy, J. A., Nagai, M., Nagano, Y., Nagasaki, T., Nagata, R., Nakamura, S., Nakano, R., Namikawa, T., Nati, F., Natoli, P., Nerval, S., Neto Godry Farias, N., Nishibori, T., Nishino, H., Noviello, F., O’Neil, G. C., O’Sullivan, C., Odagiri, K., Ochi, H., Ogawa, H., Oguri, S., Ohsaki, H., Ohta, I. S., Okada, N., Pagano, L., Paiella, A., Paoletti, D., Pascual Cisneros, G., Passerini, A., Patanchon, G., Pelgrim, V., Peloton, J., Pettorino, V., Piacentini, F., Piat, M., Piccirilli, G., Pinsard, F., Pisano, G., Plesseria, J., Polenta, G., Poletti, D., Prouv, T., Puglisi, G., Rambaud, D., Raum, C., Realini, S., Reinecke, M., Reintsema, C. D., Remazeilles, M., Ritacco, A., Rosier, P., Roudil, G., Rubino-Martin, J., Russell, M., Sakurai, H., Sakurai, Y., Sandri, M., Sasaki, M., Savini, G., Scott, D., Seibert, J., Sekimoto, Y., Sherwin, B., Shinozaki, K., Shiraishi, M., Shirron, P., Shitvov, A., Signorelli, G., Smecher, G., Spinella, F., Starck, J., Stever, S., Stompor, R., Sudiwala, R., Sugiyama, S., Sullivan, R., Suzuki, A., Suzuki, J., Suzuki, T., Svalheim, T. L., Switzer, E., Takaku, R., Takakura, H., Takakura, S., Takase, Y., Takeda, Y., Tartari, A., Tavagnacco, D., Taylor, A., Taylor, E., Terao, Y., Terenzi, L., Thermeau, J., Thommesen, H., Thompson, K. L., Thorne, B., Toda, T., Tomasi, M., Tominaga, M., Trappe, N., Tristram, M., Tsuji, M., Tsujimoto, M., Tucker, C., Ueki, R., Ullom, J. N., Umemori, K., Vacher, L., Van Lanen, J., Vermeulen, G., Vielva, P., Villa, F., Vissers, M. R., Vittorio, N., Wandelt, B., Wang, W., Wehus, I. K., Weller, J., Westbrook, B., Weymann-Despres, G., Wilms, J., Winter, B., Wollack, E. J., Yamasaki, N. Y., Yoshida, T., Yumoto, J., Watanuki, K., Zacchei, A., Zannoni, M., and Zonca, A.

Abstract

Feedhorn- and orthomode transducer- (OMT) coupled transition edge sensor (TES) bolometers have been designed and micro-fabricated to meet the optical specifications of the LiteBIRD high frequency telescope (HFT) focal plane. We discuss the design and optical characterization of two LiteBIRD HFT detector types: dual-polarization, dual-frequency-band pixels with 195/280 GHz and 235/337 GHz band centers. Results show well-matched passbands between orthogonal polarization channels and frequency centers within 3% of the design values. The optical efficiency of each frequency channel is conservatively reported to be within the range 0.64−0.72, determined from the response to a cryogenic, temperature-controlled thermal source. These values are in good agreement with expectations and either exceed or are within 10% of the values used in the LiteBIRD sensitivity forecast. Lastly, we report a measurement of loss in Nb/SiNx/Nb microstrip at 100 mK and over the frequency range 200–350 GHz, which is comparable to values previously reported in the literature

Published
2022

46. Characterization of NbTiN Films With Thicknesses Below 20 nm for Low Power Kinetic Inductance Amplifiers

Author

Giachero, A, Vissers, M, Wheeler, J, Malnou, M, Austermann, J, Hubmayr, J, Nucciotti, A, Ullom, J, Gao, J, Vissers, MR, Wheeler, JD, Austermann, JE, Ullom, JN, Giachero, A, Vissers, M, Wheeler, J, Malnou, M, Austermann, J, Hubmayr, J, Nucciotti, A, Ullom, J, Gao, J, Vissers, MR, Wheeler, JD, Austermann, JE, and Ullom, JN

Abstract

A quantum-limited amplification chain is a fundamental advantage for any application that may benefit from the detection of very faint signals. Reading out arrays of superconducting detectors (TESs or MKIDs), resonant cavities, or qubits, calls for large bandwidth amplifiers in addition to having the lowest possible noise. At millikelvin temperatures, Kinetic Inductance Traveling-Wave Parametric Amplifiers (KI-TWPAs) working in 3-wave-mixing (3WM) and fabricated from a 20 nm thick NbTiN film have shown promising noise performances, as they can operate close to the quantum limit (Malnou et al., 2021). However, they still require fairly high pump power. Devices that would require lower pump power would be easier to implement in readout chains, could reach the quantum limit and they would be compatible with qubit readout. A possible solution for obtaining this optimal configuration is to use a thinner superconducting film. In this work we explore the properties of NbTiN films with a thickness less than 20 nm and we report the obtained experimental characterizations in terms of critical temperature, normal resistivity, and kinetic inductance. A new design for a 3WM KI-TWPA amplifier, based on these developed superconducting films, is introduced and discussed.

Published
2023

47. Grondwater in natuurgebieden nog van onberispelijke kwaliteit? : Onderzoek grondwaterkwaliteit natuurgebieden provincie Utrecht

Author

Vissers, M., Gelderen, J. van, Vissers, M., and Gelderen, J. van

Abstract

Op verzoek van de provinciale Staten is in 2022 onderzoek gedaan naar de kwaliteit van het freatische grondwater in natuurgebieden. Aanleiding hiervoor was onder meer het onderzoek over het voorkomen van bestrijdingsmiddelen in natuurgebieden in Provincie Drenthe en was daarnaast het in 2020 breed aantreffen van enkele nieuwe verontreinigende stoffen in het freatisch grondwatermeetnet van de provincie Utrecht.

Published
2023

49. LiteBIRD: An All-Sky Cosmic Microwave Background Probe of Inflation

Author

Lee, Adrian T, Ade, P. A. R, Akiba, Y, Alonso, D, Arnold, K, Aumont, J, Austermann, J, Baccigalupi, C, Banday, A. J, Banerji, R, Barreiro, R. B, Basak, S, Beall, J, Beckman, S, Bersanelli, M, Borrill, J, Boulanger, F, Brown, M. L, Bucher, M, Buzzelli, A, Calabrese, E, Casas, F. J, Challinor, A, Chan, V, Chinone, Y, Cliche, J.-F, Columbro, F, Cukierman, A, Curtis, D, Danto, P, de Bernardis, P, de Haan, T, De Petris, M, Dickinson, C, Dobbs, M, Dotani, T, Duband, L, Ducout, A, Du, S, Duivenvoorden, A, Duval, J.-M, Ebisawa, K, Elleflot, T, Enokida, H, Eriksen, H. K, Errard, J, Essinger-Hileman, T, Finelli, F, Flauger, R, Franceschet, C, Fuskeland, U, Ganga, K, Gao, J.-R, Genovo-Santos, R, Ghigna, T, Gomez, A, Gradziel, M. L, Grain, J, Grupp, F, Gruppuso, A, Gudmundsson, J. E, Halverson, N. W, Hargrave, P, Hasebe, T, Hasegawa, M, Hattori, M, Hazumi, M, Henrot-Versille, S, Herranz, D, Hill, C, Hilton, G, Hirota, Y, Hivon, E, Hlozek, R, Hoang, D.-T, Hubmayr, J, Ichiki, K, Iida, T, Imada, H, Ishimura, K, Ishino, H, Jaehnig, G. C, Jones, M, Kaga, T, Kashima, S, Kataoka, Y, Katayama, N, Kawasaki, T, Keskitalo, R, Kibayashi, A, Kikuchi, T, Kimura, K, Kisner, T, Kobayashi, Y, Kogiso, N, Kogut, A, Kohri, K, Komatsu, E, Komatsu, K, Konishi, K, Krachmalnico, N, Kuo, C. L, Kurinsky, N, Kushino, A, Kuwata-Gonokami, M, Lamagna, L, Lattanzi, M, Lee, A. T, Linder, E, Maffei, B, Maino, D, Maki, M, Mangilli, A, Martinez-Gonzalez, E, Masi, S, Mathon, R, Matsumura, T, Mennella, A, Migliaccio, M, Minami, Y, Mistuda, K, Molinari, D, Montier, L, Morgante, G, Mot, B, Murata, Y, Murphy, J. A, Nagai, M, Nagata, R, Nakamura, S, Namikawa, T, Natoli, P, Nerval, S, Nishibori, T, Nishino, H, Nomura, Y, Noviello, F, O'Sullivan, C, Ochi, H, Ogawa, H, Ohsaki, H, Ohta, I, Okada, N, Pagano, L, Paiella, A, Paoletti, D, Patanchon, G, Piacentini, F, Pisano, G, Polenta, G, Poletti, D, Prouve, T, Puglisi, G, Rambaud, D, Raum, C, Realini, S, Remazeilles, M, Roudil, G, Rubino-Martin, J. A, Russell, M, Sakurai, H, Sakurai, Y, Sandri, M, Savini, G, Scott, D, Sekimoto, Y, Sherwin, B. D, Shinozaki, K, Shiraishi, M, Shirron, P, Signorelli, G, Smecher, G, Spizzi, P, Stever, S. L, Stompor, R, Sugai, H, Sugiyama, S, Suzuki, A, Suzuki, J, Switzer, E, Takaku, R, Takakura, H, Takakura, S, Takeda, Y, Taylor, A, Taylor, E, Terao, Y, Thompson, K. L, Thorne, B, Tomasi, M, Tomida, H, Trappe, N, Tristram, M, Tsuji, M, Tsujimoto, M, Tucker, C, Ullom, J, Uozumi, S, Utsunomiya, S, Van Lanen, J, Vermeulen, G, Vielva, P, Villa, F, Vissers, M, Vittorio, N, Voisin, F, Walker, I, Watanabe, N, Wehus, I, Weller, J, Westbrook, B, Winter, B, Wollack, E, Yamamoto, R, Yamasaki, N. Y, Yanagisawa, M, Yoshida, T, Yumoto, J, Zannoni, M, and Zonca, A

Subjects
Astrophysics
Abstract

The LiteBIRD mission will map polarized fluctuations in the cosmic microwave background (CMB) to search for the signature of gravitational waves from inflation, potentially opening a window on the Universe a fraction of a second after the Big Bang. CMB measurements from space give access to the largest angular scales and the full frequency range to constrain Galactic foregrounds, and LiteBIRD has been designed to take best advantage of the unique window of space. LiteBIRD will have a powerful ability to separate Galactic foreground emission from the CMB due to its 15 frequency bands spaced between 40 and 402 GHz and sensitive 100-mK bolometers. LiteBIRD will provide stringent control of systematic errors due to the benign thermal environment at the second Lagrange point, L2, 20-K rapidly rotating half-wave plates on each telescope, and the ability to crosscheck its results by measuring both the reionization and recombination peaks in the B-mode power spectrum. LiteBIRD would be the next step in the series of CMB space missions, COBE, WMAP, and Planck, each of which has given landmark scientific discoveries.

Published
2019

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