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95 results on '"Louchet-Chauvet, Anne"'

1. Versatile, fast and accurate frequency excursions with a semiconductor laser

Author

Llauze, Thomas, Montjovet-Basset, Félix, and Louchet-Chauvet, Anne

Subjects
Physics - Optics
Abstract

Achieving accurate arbitrary frequency excursions with a laser can be quite a technical challenge, especially when steep slopes (GHz/$\mu$s) are required, due to both deterministic and stochastic frequency fluctuations. In this work we present a multi-stage correction combining four techniques: pre-distorsion of the laser modulation, iterative correction, opto-electronic feedback loop and feed-forward correction. This combination allows not only to compensate for the non-instantaneous response of the laser to an input modulation, but also to correct in real time the stochastic frequency fluctuations. We implement this multi-stage architecture on a commercial DBR laser and verify its efficiency, first with monochromatic operation and second with highly demanding frequency excursions. We demonstrate that our multi-stage correction not only enables a strong reduction of the laser linewidth, but also allows steep frequency excursions with a relative RMS frequency error well below $1$%, and a laser spectral purity consistently better than $100$~kHz even in the midst of GHz-scale frequency excursions., Comment: 20 pages, 17 figures

Published
2024
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2. Strain-mediated ion-ion interaction in rare-earth-doped solids

Author

Louchet-Chauvet, Anne and Chanelière, Thierry

Subjects
Condensed Matter - Materials Science, Physics - Atomic Physics, Quantum Physics
Abstract

It was recently shown that the optical excitation of rare-earth ions produces a local change of the host matrix shape, attributed to a change of the rare-earth ion's electronic orbital geometry. In this work we investigate the consequences of this piezo-orbital backaction and show from a macroscopic model how it yields a disregarded ion-ion interaction mediated by mechanical strain. This interaction scales as $1/r^3$, similarly to the other archetypal ion-ion interactions, namely electric and magnetic dipole-dipole interactions. We quantitatively assess and compare the magnitude of these three interactions from the angle of the instantaneous spectral diffusion mechanism, and reexamine the scientific literature in a range of rare-earth doped systems in the light of this generally underestimated contribution., Comment: 15 pages, 3 figures, 3 tables

Published
2023
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3. Limits to the sensitivity of a rare-earth-enabled cryogenic vibration sensor

Author

Louchet-Chauvet, Anne and Chanelière, Thierry

Subjects
Physics - Instrumentation and Detectors, Condensed Matter - Materials Science, Physics - Atomic Physics, Quantum Physics
Abstract

Cryogenics is a pivotal aspect in the development of quantum technologies. Closed-cycle devices have recently emerged as an environmentally friendly and low-maintenance alternative to liquid helium cryostats. Yet the larger level of vibrations in dry cryocoolers forbids their use in most sensitive applications. In a recent work, we have proposed an inertial, broadband, contactless sensor based on the piezospectroscopic effect, ie the natural sensitivity of optical lines to strain exhibited by impurities in solids. This sensor builds on the exceptional spectroscopic properties of rare earth ions and operates below 4K, where spectral hole burning considerably enhances the sensitivity. In this paper, we investigate the fundamental and technical limitations of this vibration sensor by comparing a rigid sample attachment to cold stage of a pulse-tube cryocooler and a custom-designed exchange gas chamber for acoustic isolation., Comment: 7 pages, 5 figures

Published
2021
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4. Piezo-orbital backaction force in a rare-earth doped crystal

Author

Louchet-Chauvet, Anne, Verlot, Pierre, Poizat, Jean-Philippe, and Chanelière, Thierry

Subjects
Physics - Atomic Physics, Condensed Matter - Materials Science, Physics - Optics, Quantum Physics
Abstract

We investigate a system composed of an ensemble of room temperature rare-earth ions embedded in a bulk crystal, intrinsically coupled to internal strain via their sensitivity to the surrounding crystal field. We evidence the generation of a mechanical response under resonant atomic excitation. We find this motion to be the sum of two fundamental, resonant optomechanical backaction processes: a conservative, piezo-orbital mechanism, resulting from the modification of the crystal field associated with the promotion of the ions to their excited state, and a dissipative, non-radiative photothermal process related to the phonons generated throughout the atomic population relaxation. Our work opens new research avenues in hybrid optomechanics, and highlights new interactions that may be key for understanding the dephasing dynamics of ultra-coherent rare-earth ions., Comment: Main text: 6 pages, 4 figures. Supplementary Material: 7 pages, 6 figures

Published
2021
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5. Deep and persistent spectral holes in Tm-doped yttrium orthosilicate for imaging applications

Author

Venet, Caroline, Car, Benjamin, Veissier, Lucile, Ramaz, François, and Louchet-Chauvet, Anne

Subjects
Physics - Optics, Quantum Physics
Abstract

With their optical wavelength in the near infrared (790-800nm) and their unique spectroscopic properties at cryogenic temperatures, thulium-doped crystals are at the center of many architectures linked to classical signal processing and quantum information. In this work, we focus on Tm-doped YSO, a compound that was left aside in the mid-1990s due to its rather short optical coherence lifetime. By means of time-resolved hole-burning spectroscopy, we investigate the anisotropic enhanced nuclear Zeeman effect and demonstrate deep, sub-MHz, persistent spectral hole burning under specific magnetic field orientation and magnitude. By estimating the experimental parameters corresponding to a real-scale ultrasound optical tomography setup using Tm:YSO as a spectral filter, we validate Tm:YSO as a promising compound for medical imaging in the human body., Comment: 8 pages, 11 figures

Published
2018
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6. Piezospectroscopic measurement of high-frequency vibrations in a pulse-tube cryostat

Author

Louchet-Chauvet, Anne, Ahlefeldt, Rose, and Chanelière, Thierry

Subjects
Physics - Instrumentation and Detectors, Condensed Matter - Materials Science, Physics - Atomic Physics
Abstract

Vibrations in cryocoolers are a recurrent concern to the end user. They appear in different parts of the acoustic spectrum depending on the refrigerator type, Gifford McMahon or pulse-tube, and with a variable coupling strength to the physical system under interest. Here, we use the piezospectroscopic effect in rare-earth doped crystals at low temperature as a high resolution, contact-less probe for the vibrations. With this optical spectroscopic technique, we obtain and analyze the vibration spectrum up to 700kHz of a 2kW pulse-tube cooler. We attempt an absolute calibration based on known experimental parameters to make our method partially quantitative and to provide a possible comparison with other well-established techniques.

Published
2018
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8. Ultrasound modulated optical tomography in scattering media: flux filtering based on persistent spectral hole burning in the optical diagnosis window

Author

Venet, Caroline, Bocoum, Maïmouna, Laudereau, Jean-Baptiste, Chanelière, Thierry, Ramaz, François, and Louchet-Chauvet, Anne

Subjects
Physics - Optics, Physics - Atomic Physics, Physics - Medical Physics
Abstract

Ultrasound modulated optical tomography (UOT) is a powerful imaging technique to discriminate healthy from unhealthy biological tissues based on their optical signature. Among the numerous detection techniques developed for acousto-optic imaging, only those based on spectral filtering are intrinsically immune to speckle decorrelation. This paper reports on UOT imaging based on spectral hole burning in Tm:YAG crystal under a moderate magnetic field (200G) with a well-defined orientation. The deep and long-lasting holes translate into a more efficient UOT imaging with a higher contrast and faster imaging frame rate. We demonstrate the potential of this method by imaging calibrated phantom scattering gels., Comment: 4 pages, 5 figures

Published
2018
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9. Selective optical addressing of nuclear spins through superhyperfine interaction in rare-earth doped solids

Author

Car, Benjamin, Veissier, Lucile, Louchet-Chauvet, Anne, Gouët, Jean-Louis Le, and Chanelière, Thierry

Subjects
Quantum Physics
Abstract

In Er$^{3+}$:Y$_2$SiO$_5$, we demonstrate the selective optical addressing of the $^{89}$Y$^{3+}$ nuclear spins through their superhyperfine coupling with the Er$^{3+}$ electronic spins possessing large Land\'e $g$-factors. We experimentally probe the electron-nuclear spin mixing with photon echo techniques and validate our model. The site-selective optical addressing of the Y$^{3+}$ nuclear spins is designed by adjusting the magnetic field strength and orientation. This constitutes an important step towards the realization of long-lived solid-state qubits optically addressed by telecom photons., Comment: 5 pages, 4 figures, supplementary material (3 pages)

Published
2017
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12. Optical memory bandwidth and multiplexing capacity in the erbium telecommunication window

Author

Dajczgewand, Julian, Ahlefeldt, Rose, Böttger, Thomas, Louchet-Chauvet, Anne, Gouët, Jean-Louis Le, and Chanelière, Thierry

Subjects
Quantum Physics, Physics - Atomic Physics
Abstract

We study the bandwidth and multiplexing capacity of an erbium-doped optical memory for quantum storage purposes. We concentrate on the protocol ROSE (Revival of a Silenced Echo) because it has the largest potential multiplexing capacity. Our analysis is applicable to other protocols that involve strong optical excitation. We show that the memory performance is limited by instantaneous spectral diffusion and we describe how this effect can be minimised to achieve optimal performance.

Published
2014
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13. Interlaced spin grating for optical wave filtering

Author

Linget, Héloïse, Chanelière, Thierry, Gouët, Jean-Louis Le, Berger, Perrine, Morvan, Loïc, and Louchet-Chauvet, Anne

Subjects
Quantum Physics, Physics - Atomic Physics, 81V45
Abstract

Interlaced Spin Grating is a scheme for the preparation of spectro-spatial periodic absorption gratings in a inhomogeneously broadened absorption profile. It relies on the optical pumping of atoms in a nearby long-lived ground state sublevel. The scheme takes advantage of the sublevel proximity to build large contrast gratings with unlimited bandwidth and preserved average optical depth. It is particularly suited to Tm-doped crystals in the context of classical and quantum signal processing. In this paper, we study the optical pumping dynamics at play in an Interlaced Spin Grating and describe the corresponding absorption profile shape in an optically thick atomic ensemble. We show that, in Tm:YAG, the diffraction efficiency of such a grating can reach 18.3% in the small angle, and 11.6% in the large angle configuration when the excitation is made of simple pulse pairs, considerably outperforming conventional gratings., Comment: 11 pages, 13 figures in Physical Review A, 2015

Published
2014
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14. Quantum memory for light: large efficiency at telecom wavelength

Author

Dajczgewand, Julián, Gouët, Jean-Louis Le, Louchet-Chauvet, Anne, and Chanelière, Thierry

Subjects
Quantum Physics
Abstract

We implement the ROSE protocol in an erbium doped solid, compatible with the telecom range. The ROSE scheme is an adaptation of the standard 2-pulse photon echo to make it suitable for a quantum memory. We observe an efficiency of 40% in a forward direction by using specific orientations of the light polarizations, magnetic field and crystal axes.

Published
2013
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15. Time reversal of light by linear dispersive filtering near atomic resonance

Author

Linget, Héloïse, Chanelière, Thierry, Gouët, Jean-Louis Le, and Louchet-Chauvet, Anne

Subjects
Physics - Optics, Quantum Physics
Abstract

Based on the similarity of paraxial diffraction and dispersion mathematical descriptions, the temporal imaging of optical pulses combines linear dispersive filters and quadratic phase modulations operating as time lenses. We consider programming a dispersive filter near atomic resonance in rare earth ion doped crystals, which leads to unprecedented high values of dispersive power. This filter is used in an approximate imaging scheme, combining a single time lens and a single dispersive section and operating as a time reversing device, with potential applications in radio-frequency signal processing. This scheme is closely related to three-pulse photon echo with chirped pulses but the connection with temporal imaging and dispersive filtering emphasizes new features., Comment: 21 pages, 11 figures

Published
2013
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16. Adiabatic Passage and Spin Locking in Tm$^{3+}$:YAG

Author

Pascual-Winter, María Florencia, Tongning, Robert-Christopher, Lauro, Romain, Louchet-Chauvet, Anne, Chanelière, Thierry, and Gouët, Jean-Louis Le

Subjects
Quantum Physics, Physics - Atomic Physics
Abstract

In low concentration Tm$^{3+}$:YAG, we observe efficient adiabatic rapid passage (ARP) of thulium nuclear spin over flipping times much longer than $T_2$. Efficient ARP with long flipping time has been observed in monoatomic solids for decades and has been analyzed in terms of spin temperature and of the thermodynamic equilibrium of a coupled spin ensemble. In low-concentration impurity-doped crystals the spin temperature concept may be questioned. A single spin model should be preferred since the impurity ions are weakly coupled together but interact with the numerous off-resonant matrix ions that originate the spin-spin relaxation. The experiment takes place in the context of quantum information investigation, involving impurity-doped crystals, spin hyperpolarization by optical pumping, and optical detection of the spin evolution., Comment: 6 pages, 4 figures

Published
2012
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17. Entanglement-assisted atomic clock beyond the projection noise limit

Author

Louchet-Chauvet, Anne, Appel, Jürgen, Renema, Jelmer J., Oblak, Daniel, Kjærgaard, Niels, and Polzik, Eugene S.

Subjects
Quantum Physics
Abstract

We use a quantum non-demolition measurement to generate a spin squeezed state and to create entanglement in a cloud of 10^5 cold cesium atoms, and for the first time operate an atomic clock improved by spin squeezing beyond the projection noise limit in a proof-of-principle experiment. For a clock-interrogation time of 10 \mu\s the experiments show an improvement of 1.1 dB in the signal-to-noise ratio, compared to the atomic projection noise limit.

Published
2009
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28. Optomechanical backaction processes in a bulk rare-earth doped crystal

Author

Louchet-Chauvet, Anne, Verlot, Pierre, Poizat, Jean-Philippe, Chanelière, Thierry, Laboratoire Aimé Cotton (LAC), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École normale supérieure - Cachan (ENS Cachan), Institut Langevin - Ondes et Images (UMR7587) (IL), Sorbonne Université (SU)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Paris (UP)-Centre National de la Recherche Scientifique (CNRS), Institut Universitaire de France (IUF), Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon, Nanophysique et Semiconducteurs (NPSC), Institut Néel (NEEL), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), and Université Grenoble Alpes (UGA)

Subjects
Condensed Matter - Materials Science, Quantum Physics, [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], Atomic Physics (physics.atom-ph), Materials Science (cond-mat.mtrl-sci), FOS: Physical sciences, Physics::Optics, Quantum Physics (quant-ph), Physics - Atomic Physics, Physics - Optics, Optics (physics.optics)
Abstract

We investigate a novel hybrid system composed of an ensemble of room temperature rare-earth ions embedded in a bulk crystal, intrinsically coupled to internal strain via the surrounding crystal field. We evidence the generation of a mechanical response under resonant light excitation. Thanks to an ultra-sensitive time- and space-resolved photodeflection setup, we interpret this motion as the sum of two resonant optomechanical backaction processes: a conservative, piezoscopic process induced by the optical excitation of a well-defined electronic configuration, and a dissipative, non-radiative photothermal process related to the phonons generated throughout the atomic population relaxation. Parasitic heating processes, namely off-resonant dissipative contributions, are absent. This work demonstrates an unprecedented level of control of the conservative and dissipative relative parts of the optomechanical backaction, confirming the potential of rare-earth-based systems as promising hybrid mechanical systems.

Published
2021

31. Ultranarrow spectral filter for acousto-optic imaging for medical applications (Conference Presentation)

Author

Venet, Caroline, Bocoum, Maïmouna, Chanelière, Thierry, Ramaz, François, Louchet-Chauvet, Anne, Laboratoire Aimé Cotton (LAC), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École normale supérieure - Cachan (ENS Cachan), Institut Langevin - Ondes et Images (UMR7587) (IL), Sorbonne Université (SU)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Paris (UP)-Centre National de la Recherche Scientifique (CNRS)

Subjects
010302 applied physics, 010309 optics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], 0103 physical sciences, 01 natural sciences, ComputingMilieux_MISCELLANEOUS, 3. Good health
Abstract

International audience

Published
2018

40. Optical memory bandwidth and multiplexing capacity in the erbium telecommunication window

Author

Dajczgewand, Julian, Ahlefeldt, Rose, B��ttger, Thomas, Louchet-Chauvet, Anne, Gou��t, Jean-Louis Le, Chaneli��re, Thierry, Laboratoire Aimé Cotton (LAC), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École normale supérieure - Cachan (ENS Cachan), and Department of Physics and Astronomy, University of San Francisco (USF)

Subjects
Quantum Physics, Hardware_MEMORYSTRUCTURES, [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], Atomic Physics (physics.atom-ph), instantaneous spectral diffusion, FOS: Physical sciences, Physics::Optics, quantum memory, rare-earth crystal, Physics - Atomic Physics, erbium, [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], Quantum Physics (quant-ph), Computer Science::Information Theory
Abstract

International audience; We study the bandwidth and multiplexing capacity of an erbium-doped optical memory for quantum storage purposes. We concentrate on the protocol revival of a silenced echo because it has the largest potential multiplexing capacity. Our analysis is applicable to other protocols that involve strong optical excitation. We show that the memory performance is limited by instantaneous spectral diffusion and we describe how this effect can be minimized to achieve optimal performance.

Published
2015

41. Free fall acceleration determination for the LNE watt balance

Author

Merlet, Sébastien, Gillot, Pierre, Farah, Tristan, Bodart, Quentin, Le Gouët, Julien, Cheinet, Patrick, Guerlin, Christine, Louchet-Chauvet, Anne, Malossi, Nicola, Kopaev, Alexander, Francis, Olivier, d'Agostino, Giancarlo, Diament, Michel, Geneves, Gérard, Clairon, André, Landragin, Arnaud, Pereira dos Santos, Franck, Laboratoire national de métrologie et d'essais - Systèmes de Référence Temps-Espace (LNE - SYRTE), Systèmes de Référence Temps Espace (SYRTE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Dipartimento di Fisica, Università di Firenze (Dipartimento di Fisica, Università di Firenze), Università degli Studi di Firenze = University of Florence [Firenze] (UNIFI), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), DEMR, ONERA, Université Paris Saclay (COmUE) [Palaiseau], ONERA-Université Paris Saclay (COmUE), DOTA, ONERA, Université Paris Saclay (COmUE) [Palaiseau], Laboratoire Aimé Cotton (LAC), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École normale supérieure - Cachan (ENS Cachan), Laboratoire Kastler Brossel (LKB (Lhomond)), Université Pierre et Marie Curie - Paris 6 (UPMC)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), School of Science and Technology [Camerino], Università degli Studi di Camerino (UNICAM), Sternberg Astronomical Institute [Moscow], Lomonosov Moscow State University (MSU), University of Luxembourg [Luxembourg], Istituto Nazionale di Ricerca Metrologica (INRiM), Institut de Physique du Globe de Paris (IPGP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS), Laboratoire National de Métrologie et d'Essais [Trappes] (LNE ), Dipartimento di Fisica e Astronomia [Firenze], Università degli Studi di Firenze = University of Florence (UniFI), École normale supérieure - Cachan (ENS Cachan)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Università degli Studi di Camerino = University of Camerino (UNICAM), and Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], WATT BALANCE, GRAVITY MODEL, GRAVIMETRY, GRAVITY MAPPING, ATOMIC INTERFEROMETRY
Abstract

International audience; The "watt balance" project aims at linking the kilogram definition to the Planck constant. The weighing of the mass involved requires a determination of the acceleration g with an uncertainty better than 10 −8. This work aims at determining g with an atomic gravimeter and a dedicated gravimetric site.; Le projet « balance du watt » propose de relier la définition du kilogramme à la constante de Planck. La pesée de la masse impliquée nécessite une détermination de l'accélération de la pesanteur g avec une exactitude meilleure que 10^−8. Les travaux résumés dans cet article visent à réaliser cette détermination à l'aide d'un gravimètre atomique et d'un site gravimétrique dédié.

Published
2014

42. Détermination de l'accélération de la pesanteur pour la balance du watt du LNE

Author

Merlet, Sébastien, Gillot, Pierre, Farah, Tristan, Bodart, Quentin, Le Gouet, Julien, Cheinet, Patrick, Guerlin, Christine, Louchet-Chauvet, Anne, Malossi, Nicola, Kopaev, Alexander, Francis, Olivier, D'Agostino, Giancarlo, Diament, Michel, Geneves, Gérard, Clairon, André, Landragin, Arnaud, and Pereira Dos Santos, Franck

Subjects
gravity model, Earth sciences & physical geography [G02] [Physical, chemical, mathematical & earth Sciences], gravity mapping, Physique [G04] [Physique, chimie, mathématiques & sciences de la terre], Sciences de la terre & géographie physique [G02] [Physique, chimie, mathématiques & sciences de la terre], Physics [G04] [Physical, chemical, mathematical & earth Sciences], atomic interferometry, watt balance, gravimetry
Abstract

The “watt balance” project aims at linking the kilogram definition to the Planck constant. The weighing of the mass involved requires a determination of the acceleration g with an uncertainty better than 10-8. This work aims at determining g with an atomic gravimeter and a dedicated gravimetric site.

Published
2014

43. Quantum memory for light: large efficiency at telecom wavelength

Author

Dajczgewand, Juli��n, Gou��t, Jean-Louis Le, Louchet-Chauvet, Anne, and Chaneli��re, Thierry

Subjects
Quantum Physics, FOS: Physical sciences, Physics::Optics, Quantum Physics (quant-ph)
Abstract

We implement the ROSE protocol in an erbium doped solid, compatible with the telecom range. The ROSE scheme is an adaptation of the standard 2-pulse photon echo to make it suitable for a quantum memory. We observe an efficiency of 40% in a forward direction by using specific orientations of the light polarizations, magnetic field and crystal axes.

Published
2013

44. Ultra-wideband “Rainbow” RF spectral analyzer

Author

Berger, Perrine, primary, Schwarz, Muriel, additional, Molin, Stephanie, additional, Dolfi, Daniel, additional, Morvan, Loic, additional, Louchet-Chauvet, Anne, additional, Chaneliere, Thierry, additional, and Le Gouet, Jean-Louis, additional

Published
2015
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45. High sensitivity absolute atom gravimeter

Author

Guerlin, C., Farah, Tristan, Louchet-Chauvet, Anne, Clairon, André, Landragin, Arnaud, Merlet, Sébastien, Pereira dos Santos, Franck, Systèmes de Référence Temps Espace (SYRTE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Interférométrie Atomique et Capteurs Inertiels, Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), and Théorie et métrologie

Subjects
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

International audience

Published
2012

46. Continuous g monitoring with atom interferomerty

Author

Farah, Tristan, Clairon, André, Landragin, Arnaud, Merlet, Sébastien, Pereira dos Santos, Franck, Louchet-Chauvet, Anne, Systèmes de Référence Temps Espace (SYRTE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Interférométrie Atomique et Capteurs Inertiels, Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

International audience; We present our cold atom interferometer using Rb-87 developed to perform absolute g measurement similar to the Stanford experiment [1] which used Cs. The device and the measurement protocol are described and an example of 12 days continuous measurement is presented. This measurement shows the capabilities of the instrument in the frame of a watt balance experiment, avoiding the use of environmental models to extrapolate the accurate value of g needed to link the Planck constant to the kilogram [2]. Limits in terms of sensitivity and accuracy are finally presented.

Published
2011

47. Accuracy of a cold atom gravimeter

Author

Merlet, Sébastien, Bodart, Quentin, Louchet-Chauvet, Anne, Landragin, Arnaud, Pereira dos Santos, Franck, Systèmes de Référence Temps Espace (SYRTE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Interférométrie Atomique et Capteurs Inertiels, Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

International audience

Published
2010

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