Search

Your search keyword '"Lavoie, J.-P."' showing total 400 results
Start Over Author "Lavoie, J.-P."
400 results on '"Lavoie, J.-P."'

1. Quantum circuits with many photons on a programmable nanophotonic chip

Author

Arrazola, J. M., Bergholm, V., Brádler, K., Bromley, T. R., Collins, M. J., Dhand, I., Fumagalli, A., Gerrits, T., Goussev, A., Helt, L. G., Hundal, J., Isacsson, T., Israel, R. B., Izaac, J., Jahangiri, S., Janik, R., Killoran, N., Kumar, S. P., Lavoie, J., Lita, A. E., Mahler, D. H., Menotti, M., Morrison, B., Nam, S. W., Neuhaus, L., Qi, H. Y., Quesada, N., Repingon, A., Sabapathy, K. K., Schuld, M., Su, D., Swinarton, J., Száva, A., Tan, K., Tan, P., Vaidya, V. D., Vernon, Z., Zabaneh, Z., and Zhang, Y.

Subjects
Quantum Physics
Abstract

Growing interest in quantum computing for practical applications has led to a surge in the availability of programmable machines for executing quantum algorithms. Present day photonic quantum computers have been limited either to non-deterministic operation, low photon numbers and rates, or fixed random gate sequences. Here we introduce a full-stack hardware-software system for executing many-photon quantum circuits using integrated nanophotonics: a programmable chip, operating at room temperature and interfaced with a fully automated control system. It enables remote users to execute quantum algorithms requiring up to eight modes of strongly squeezed vacuum initialized as two-mode squeezed states in single temporal modes, a fully general and programmable four-mode interferometer, and genuine photon number-resolving readout on all outputs. Multi-photon detection events with photon numbers and rates exceeding any previous quantum optical demonstration on a programmable device are made possible by strong squeezing and high sampling rates. We verify the non-classicality of the device output, and use the platform to carry out proof-of-principle demonstrations of three quantum algorithms: Gaussian boson sampling, molecular vibronic spectra, and graph similarity.

Published
2021
Full Text
View/download PDF

2. Tunable skyrmion-skyrmion binding on the surface of a topological insulator

Author

Tiwari, Kunal L., Lavoie, J., Pereg-Barnea, T., and Coish, W. A.

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science
Abstract

We show that skyrmions on the surface of a magnetic topological insulator may experience an attractive interaction that leads to the formation of a skyrmion-skyrmion bound state. This is in contrast to the case of skyrmions in a conventional chiral ferromagnet, for which the intrinsic interaction is repulsive. The origin of skyrmion binding in our model is the molecular hybridization of topologically protected electronic orbitals associated with each skyrmion. Attraction between the skyrmions can therefore be controlled by tuning a chemical potential that populates/depopulates the lowest-energy molecular orbital. We find that the skyrmion-skyrmion bound state can be made stable, unstable, or metastable depending on the chemical potential, magnetic field, and easy-axis anisotropy of the underlying ferromagnet, resulting in a rich phase diagram. Finally, we discuss the possibility to realize this effect in a recently synthesized Cr doped ${\left(\mathrm{Bi}_{2-y}\mathrm{Sb}_{y}\right)}_{2}\mathrm{Te}_3$ heterostructure., Comment: 12 pages, 8 figures; v2: Updated to address referee comments, minor stylistic changes. Published version

Published
2019
Full Text
View/download PDF

3. Broadband quadrature-squeezed vacuum and nonclassical photon number correlations from a nanophotonic device

Author

Vaidya, V. D., Morrison, B., Helt, L. G., Shahrokhshahi, R., Mahler, D. H., Collins, M. J., Tan, K., Lavoie, J., Repingon, A., Menotti, M., Quesada, N., Pooser, R. C., Lita, A. E., Gerrits, T., Nam, S. W., and Vernon, Z.

Subjects
Quantum Physics, Physics - Optics
Abstract

We report demonstrations of both quadrature squeezed vacuum and photon number difference squeezing generated in an integrated nanophotonic device. Squeezed light is generated via strongly driven spontaneous four-wave mixing below threshold in silicon nitride microring resonators. The generated light is characterized with both homodyne detection and direct measurements of photon statistics using photon number-resolving transition edge sensors. We measure $1.0(1)$~dB of broadband quadrature squeezing (${\sim}4$~dB inferred on-chip) and $1.5(3)$~dB of photon number difference squeezing (${\sim}7$~dB inferred on-chip). Nearly-single temporal mode operation is achieved, with measured raw unheralded second-order correlations $g^{(2)}$ as high as $1.95(1)$. Multi-photon events of over 10 photons are directly detected with rates exceeding any previous quantum optical demonstration using integrated nanophotonics. These results will have an enabling impact on scaling continuous variable quantum technology., Comment: Minor revisions, and Fig. 5 corrected; Now published in Science Advances

Published
2019
Full Text
View/download PDF

4. Empagliflozin in the treatment of heart failure with reduced ejection fraction in addition to background therapies and therapeutic combinations (EMPEROR-Reduced): a post-hoc analysis of a randomised, double-blind trial

Author

Packer, M, Anker, S, Butler, J, Filippatos, G, Pocock, S, Zannad, F, Ferreira, JP, Brueckmann, M, George, J, Jamal, W, Welty, FK, Palmer, M, Clayton, T, Parhofer, KG, Pedersen, TR, Greenberg, B, Konstam, MA, Lees, KR, Carson, P, Doehner, W, Miller, A, Haas, M, Pehrson, S, Komajda, M, Anand, I, Teerlink, J, Rabinstein, A, Steiner, T, Kamel, H, Tsivgoulis, G, Lewis, J, Freston, J, Kaplowitz, N, Mann, J, Petrie, J, Perrone, S, Nicholls, S, Janssens, S, Bocchi, E, Giannetti, N, Verma, S, Zhang, J, Spinar, J, Seronde, M-F, Boehm, M, Merkely, B, Chopra, V, Senni, M, Taddi, S, Tsutsui, H, Choi, D-J, Chuquiure, E, La Rocca, HPB, Ponikowski, P, Juanatey, JRG, Squire, I, Januzzi, J, Pina, I, Bernstein, R, Cheung, A, Green, J, Kaul, S, Lam, C, Lip, G, Marx, N, McCullough, P, Mehta, C, Rosenstock, J, Sattar, N, Scirica, B, Shah, S, Wanner, C, Aizenberg, D, Cartasegna, L, Colombo Berra, F, Colombo, H, Fernandez Moutin, M, Glenny, J, Alvarez Lorio, C, Anauch, D, Campos, R, Facta, A, Fernandez, A, Ahuad Guerrero, R, Lobo Márquez, L, Leon de la Fuente, RA, Mansilla, M, Hominal, M, Hasbani, E, Najenson, M, Moises Azize, G, Luquez, H, Guzman, L, Sessa, H, Amuchástegui, M, Salomone, O, Perna, E, Piskorz, D, Sicer, M, Perez de Arenaza, D, Zaidman, C, Nani, S, Poy, C, Resk, J, Villarreal, R, Majul, C, Smith Casabella, T, Sassone, S, Liberman, A, Carnero, G, Caccavo, A, Berli, M, Budassi, N, Bono, J, Alvarisqueta, A, Amerena, J, Kostner, K, Hamilton, A, Begg, A, Beltrame, J, Colquhoun, D, Gordon, G, Sverdlov, A, Vaddadi, G, Wong, J, Coller, J, Prior, D, Friart, A, Leone, A, Vervoort, G, Timmermans, P, Troisfontaines, P, Franssen, C, Sarens, T, Vandekerckhove, H, Van De Borne, P, Chenot, F, De Sutter, J, De Vuyst, E, Debonnaire, P, Dupont, M, Pereira Dutra, O, Canani, LH, Vieira Moreira, MdC, de Souza, W, Backes, LM, Maia, L, De Souza Paolino, B, Manenti, ER, Saporito, W, Villaça Guimarães Filho, F, Franco Hirakawa, T, Saliba, LA, Neuenschwander, FC, de Freitas Zerbini, CA, Gonçalves, G, Gonçalves Mello, Y, Ascenção de Souza, J, Beck da Silva Neto, L, Bocchi, EA, Da Silveira, J, de Moura Xavier Moraes Junior, JB, de Souza Neto, JD, Hernandes, M, Finimundi, HC, Sampaio, CR, Vasconcellos, E, Neves Mancuso, FJ, Noya Rabelo, MM, Rodrigues Bacci, M, Santos, F, Vidotti, M, Simões, MV, Gomes, FL, Vieira Nascimento, C, Precoma, D, Helfenstein Fonseca, FA, Ribas Fortes, JA, Leães, PE, Campos de Albuquerque, D, Kerr Saraiva, JF, Rassi, S, Alves da Costa, FA, Reis, G, Zieroth, S, Dion, D, Savard, D, Bourgeois, R, Constance, C, Anderson, K, Leblanc, M-H, Yung, D, Swiggum, E, Pliamm, L, Pesant, Y, Tyrrell, B, Huynh, T, Spiegelman, J, Lavoie, J-P, Hartleib, M, Bhargava, R, Straatman, L, Virani, S, Costa-Vitali, A, Hill, L, Heffernan, M, Khaykin, Y, Ricci, J, Senaratne, M, Zhai, A, Lubelsky, B, Toma, M, Yao, L, McKelvie, R, Noronha, L, Babapulle, M, Pandey, A, Curnew, G, Lavoie, A, Berlingieri, J, Kouz, S, Lonn, E, Chehayeb, R, Zheng, Y, Sun, Y, Cui, H, Fan, Z, Han, X, Jiang, X, Tang, Q, Zhou, J, Zheng, Z, Zhang, X, Zhang, N, Zhang, Y, Shen, A, Yu, J, Ye, J, Yao, Y, Yan, J, Xu, X, Wang, Z, Ma, J, Li, Y, Li, S, Lu, S, Kong, X, Song, Y, Yang, G, Yao, Z, Pan, Y, Guo, X, Sun, Z, Dong, Y, Zhu, J, Peng, D, Yuan, Z, Lin, J, Yin, Y, Jerabek, O, Burianova, H, Fiala, T, Hubac, J, Ludka, O, Monhart, Z, Vodnansky, P, Zeman, K, Foldyna, D, Krupicka, J, Podpera, I, Busak, L, Radvan, M, Vomacka, Z, Prosecky, R, Cifkova, R, Durdil, V, Vesely, J, Vaclavik, J, Cervinka, P, Linhart, A, Brabec, T, Miklik, R, Bourhaial, H, Olbrich, H-G, Genth-Zotz, S, Kemala, E, Lemke, B, Böhm, M, Schellong, S, Rieker, W, Heitzer, T, Ince, H, Faghih, M, Birkenfeld, A, Begemann, A, Ghanem, A, Ujeyl, A, von Haehling, S, Dorsel, T, Bauersachs, J, Prull, M, Weidemann, F, Darius, H, Nickenig, G, Wilke, A, Sauter, J, Rauch-Kroehnert, U, Frey, N, Schulze, CP, König, W, Maier, L, Menzel, F, Proskynitopoulos, N, Ebert, H-H, Sarnighausen, H-E, Düngen, H-D, Licka, M, Stellbrink, C, Winkelmann, B, Menck, N, López-Sendón, JL, de la Fuente Galán, L, Delgado Jiménez, JF, Manito Lorite, N, Pérez de Juan Romero, M, Galve Basilio, E, Cereto Castro, F, González Juanatey, JR, Gómez, JJ, Sanmartín Fernández, M, Garcia-Moll Marimon, X, Pascual Figal, D, Bover Freire, R, Bonnefoy Cudraz, E, Jobbe Duval, A, Tomasevic, D, Habib, G, Isnard, R, Picard, F, Khanoyan, P, Dubois-Rande, J-L, Galinier, M, Roubille, F, Alexandre, J, Babuty, D, Delarche, N, Berneau, J-B, Girerd, N, Saxena, M, Rosano, G, Yousef, Z, Clifford, C, Arden, C, Bakhai, A, Boos, C, Jenkins, G, Travill, C, Price, D, Koenyves, L, Lakatos, F, Matoltsy, A, Noori, E, Zilahi, Z, Andrassy, P, Kancz, S, Simon, G, Sydo, T, Vorobcsuk, A, Kiss, RG, Toth, K, Szakal, I, Nagy, L, Barany, T, Nagy, A, Szolnoki, E, Chopra, VK, Mandal, S, Rastogi, V, Shah, B, Mullasari, A, Shankar, J, Mehta, V, Oomman, A, Kaul, U, Komarlu, S, Kahali, D, Bhagwat, A, Vijan, V, Ghaisas, NK, Mehta, A, Kashyap, J, Kothari, Y, TaddeI, S, Scherillo, M, Zacà, V, Genovese, S, Salvioni, A, Fucili, A, Fedele, F, Cosmi, F, Volpe, M, Mazzone, C, Esposito, G, Doi, M, Yamamoto, H, Sakagami, S, Oishi, S, Yasaka, Y, Tsuboi, H, Fujino, Y, Matsuoka, S, Watanabe, Y, Himi, T, Ide, T, Ichikawa, M, Kijima, Y, Koga, T, Yuda, S, Fukui, K, Kubota, T, Manita, M, Fujinaga, H, Matsumura, T, Fukumoto, Y, Kato, R, Kawai, Y, Hiasa, G, Kazatani, Y, Mori, M, Ogimoto, A, Inoko, M, Oguri, M, Kinoshita, M, Okuhara, K, Watanabe, N, Ono, Y, Otomo, K, Sato, Y, Matsunaga, T, Takaishi, A, Miyagi, N, Uehara, H, Takaishi, H, Urata, H, Kataoka, T, Matsubara, H, Matsumoto, T, Suzuki, T, Takahashi, N, Imamaki, M, Yoshitama, T, Saito, T, Sekino, H, Furutani, Y, Koda, M, Shinozaki, T, Hirabayashi, K, Tsunoda, R, Yonezawa, K, Hori, H, Yagi, M, Arikawa, M, Hashizume, T, Ishiki, R, Koizumi, T, Nakayama, K, Taguchi, S, Nanasato, M, Yoshida, Y, Tsujiyama, S, Nakamura, T, Oku, K, Shimizu, M, Suwa, M, Momiyama, Y, Sugiyama, H, Kobayashi, K, Inoue, S, Kadokami, T, Maeno, K, Kawamitsu, K, Maruyama, Y, Nakata, A, Shibata, T, Wada, A, Cho, H-J, Na, JO, Yoo, B-S, Choi, J-O, Hong, SK, Shin, J-H, Cho, M-C, Han, SH, Jeong, J-O, Kim, J-J, Kang, SM, Kim, D-S, Kim, MH, Llamas Esperon, G, Illescas Díaz, J, Fajardo Campos, P, Almeida Alvarado, J, Bazzoni Ruiz, A, Echeverri Rico, J, Lopez Alcocer, I, Valle Molina, L, Hernandez Herrera, C, Calvo Vargas, C, Padilla Padilla, FG, Rodriguez Briones, I, Chuquiure Valenzuela, EJJR, Aguilera Real, ME, Carrillo Calvillo, J, Alpizar Salazar, M, Cervantes Escárcega, JL, Velasco Sanchez, R, Al - Windy, N, van Heerebeek, L, Bellersen, L, Brunner-La Rocca, H-P, Post, J, Linssen, GCM, van de Wetering, M, Peters, R, van Stralen, R, Groutars, R, Smits, P, Yilmaz, A, Kok, WEM, Van der Meer, P, Dijkmans, P, Troquay, R, van Alem, AP, Van de Wal, R, Handoko, L, Westendorp, ICD, van Bergen, PFMM, Rensing, BJWM, Hoogslag, P, Kietselaer, B, Kragten, JA, den Hartog, FR, Alings, A, Danilowicz-Szymanowicz, L, Raczak, G, Piesiewicz, W, Zmuda, W, Kus, W, Podolec, P, Musial, W, Drelich, G, Kania, G, Miekus, P, Mazur, S, Janik, A, Spyra, J, Peruga, J, Balsam, P, Krakowiak, B, Szachniewicz, J, Ginel, M, Grzybowski, J, Chrustowski, W, Wojewoda, P, Kalinka, A, Zurakowski, A, Koc, R, Debinski, M, Fil, W, Kujawiak, M, Forys, J, Kasprzak, M, Krol, M, Michalski, P, Mirek-Bryniarska, E, Radwan, K, Skonieczny, G, Stania, K, Skoczylas, G, Madej, A, Jurowiecki, J, Firek, B, Wozakowska-Kaplon, B, Cymerman, K, Neutel, J, Adams, K, Balfour, P, Deswal, A, Djamson, A, Duncan, P, Hong, M, Murray, C, Rinde-Hoffman, D, Woodhouse, S, MacNevin, R, Rama, B, Broome-Webster, C, Kindsvater, S, Abramov, D, Barettella, M, Pinney, S, Herre, J, Cohen, A, Vora, K, Challappa, K, West, S, Baum, S, Cox, J, Jani, S, Karim, A, Akhtar, A, Quintana, O, Paukman, L, Goldberg, R, Bhatti, Z, Budoff, M, Bush, E, Potler, A, Delgado, R, Ellis, B, Dy, J, Fialkow, J, Sangrigoli, R, Ferdinand, K, East, C, Falkowski, S, Donahoe, S, Ebrahimi, R, Kline, G, Harris, B, Khouzam, R, Jaffrani, N, Jarmukli, N, Kazemi, N, Koren, M, Friedman, K, Herzog, W, Silva Enciso, J, Cheung, D, Grover-McKay, M, Hauptman, P, Mikhalkova, D, Hegde, V, Hodsden, J, Khouri, S, McGrew, F, Littlefield, R, Bradley, P, McLaurin, B, Lupovitch, S, Labin, I, Rao, V, Leithe, M, Lesko, M, Lewis, N, Lombardo, D, Mahal, S, Malhotra, V, Dauber, I, Banerjee, A, Needell, J, Miller, G, Paladino, L, Munuswamy, K, Nanna, M, McMillan, E, Mumma, M, Napoli, M, Nelson, W, O'Brien, T, Adlakha, A, Onwuanyi, A, Serota, H, Schmedtje, J, Paraschos, A, Potu, R, Sai-Sudhakar, C, Saltzberg, M, Sauer, A, Shah, P, Skopicki, H, Bui, H, Carr, K, Stevens, G, Tahirkheli, N, Tallaj, J, Yousuf, K, Trichon, B, Welker, J, Tolerico, P, Vest, A, Vivo, R, Wang, X, Abadier, R, Dunlap, S, Weintraub, N, Malik, A, Kotha, P, Zaha, V, Kim, G, Uriel, N, Greene, T, Salacata, A, Arora, R, Gazmuri, R, Kobayashi, J, Iteld, B, Vijayakrishnan, R, Dab, R, Mirza, Z, Marques, V, Nallasivan, M, Bensimhon, D, Peart, B, Saint-Jacques, H, Barringhaus, K, Contreras, J, Gupta, A, Koneru, S, Nguyen, V, Verma, Subodh, Dhingra, Nitish K, Butler, Javed, Anker, Stefan D, Ferreira, Joao Pedro, Filippatos, Gerasimos, Januzzi, James L, Lam, Carolyn S P, Sattar, Naveed, Peil, Barbara, Nordaby, Matias, Brueckmann, Martina, Pocock, Stuart J, Zannad, Faiez, and Packer, Milton

Published
2022
Full Text
View/download PDF

5. Quantum computing on encrypted data

Author

Fisher, K., Broadbent, A., Shalm, L. K., Yan, Z., Lavoie, J., Prevedel, R., Jennewein, T., and Resch, K. J.

Subjects
Quantum Physics
Abstract

The ability to perform computations on encrypted data is a powerful tool for protecting privacy. Recently, protocols to achieve this on classical computing systems have been found. Here we present an efficient solution to the quantum analogue of this problem that enables arbitrary quantum computations to be carried out on encrypted quantum data. We prove that an untrusted server can implement a universal set of quantum gates on encrypted quantum bits (qubits) without learning any information about the inputs, while the client, knowing the decryption key, can easily decrypt the results of the computation. We experimentally demonstrate, using single photons and linear optics, the encryption and decryption scheme on a set of gates sufficient for arbitrary quantum computations. Because our protocol requires few extra resources compared to other schemes it can be easily incorporated into the design of future quantum servers. These results will play a key role in enabling the development of secure distributed quantum systems.

Published
2013
Full Text
View/download PDF

6. Experimental Three-Particle Quantum Nonlocality under Strict Locality Conditions

Author

Erven, C., Meyer-Scott, E., Fisher, K., Lavoie, J., Higgins, B. L., Yan, Z., Pugh, C. J., Bourgoin, J. -P., Prevedel, R., Shalm, L. K., Richards, L., Gigov, N., Laflamme, R., Weihs, G., Jennewein, T., and Resch, K. J.

Subjects
Quantum Physics
Abstract

Quantum correlations are critical to our understanding of nature, with far-reaching technological and fundamental impact. These often manifest as violations of Bell's inequalities, bounds derived from the assumptions of locality and realism, concepts integral to classical physics. Many tests of Bell's inequalities have studied pairs of correlated particles; however, the immense interest in multi-particle quantum correlations is driving the experimental frontier to test systems beyond just pairs. All experimental violations of Bell's inequalities to date require supplementary assumptions, opening the results to one or more loopholes, the closing of which is one of the most important challenges in quantum science. Individual loopholes have been closed in experiments with pairs of particles and a very recent result closed the detection loophole in a six ion experiment. No experiment thus far has closed the locality loopholes with three or more particles. Here, we distribute three-photon Greenberger-Horne-Zeilinger entangled states using optical fibre and free-space links to independent measurement stations. The measured correlations constitute a test of Mermin's inequality while closing both the locality and related freedom-of-choice loopholes due to our experimental configuration and timing. We measured a Mermin parameter of 2.77 +/- 0.08, violating the inequality bound of 2 by over 9 standard deviations, with minimum tolerances for the locality and freedom-of-choice loopholes of 264 +/- 28 ns and 304 +/- 25 ns, respectively. These results represent a significant advance towards definitive tests of the foundations of quantum mechanics and practical multi-party quantum communications protocols., Comment: 13 pages, 8 figures

Published
2013
Full Text
View/download PDF

7. Classical analog for dispersion cancellation of entangled photons with local detection

Author

Prevedel, R., Schreiter, K. M., Lavoie, J., and Resch, K. J.

Subjects
Quantum Physics
Abstract

Energy-time entangled photon pairs remain tightly correlated in time when the photons are passed through equal magnitude, but opposite in sign, dispersion. A recent experimental demonstration has observed this effect on ultrafast time-scales using second-harmonic generation of the photon pairs. However, the experimental signature of this effect does not require energy-time entanglement. Here, we demonstrate a directly analogue to this effect in narrow-band second harmonic generation of a pair of classical laser pulses under similar conditions. Perfect cancellation is observed for fs pulses with dispersion as large as 850 fs$^2$, comparable to the quantum result, but with an $10^{13}$-fold improvement in signal brightness., Comment: 4 pages, 3 figures, matches published version

Published
2011
Full Text
View/download PDF

8. Quantum-inspired interferometry with chirped laser pulses

Author

Kaltenbaek, R., Lavoie, J., Biggerstaff, D. N., and Resch, K. J.

Subjects
Quantum Physics
Abstract

We introduce and implement an interferometric technique based on chirped femtosecond laser pulses and nonlinear optics. The interference manifests as a high-visibility (> 85%) phase-insensitive dip in the intensity of an optical beam when the two interferometer arms are equal to within the coherence length of the light. This signature is unique in classical interferometry, but is a direct analogue to Hong-Ou-Mandel quantum interference. Our technique exhibits all the metrological advantages of the quantum interferometer, but with signals at least 10^7 times greater. In particular we demonstrate enhanced resolution, robustness against loss, and automatic dispersion cancellation. Our interferometer offers significant advantages over previous technologies, both quantum and classical, in precision time delay measurements and biomedical imaging., Comment: 6 pages, 4 figures

Published
2008
Full Text
View/download PDF

9. Ground-Based Mobile Measurements to Track Urban Methane Emissions from Natural Gas in 12 Cities across Eight Countries

Author

Vogel, F., Ars, S., Wunch, D., Lavoie, J., Gillespie, L., Maazallahi, H., Röckmann, T., Nęcki, J., Bartyzel, J., Jagoda, P., Lowry, D., France, J., Fernandez, J., Bakkaloglu, S., Fisher, R., Lanoiselle, M., Chen, H., Oudshoorn, M., Yver-Kwok, C., Defratyka, S., Morgui, J. A., Estruch, C., Curcoll, R., Grossi, C., Chen, J., Dietrich, F., Forstmaier, A., Denier van der Gon, H. A. C., Dellaert, S. N. C., Salo, J., Corbu, M., Iancu, S. S., Tudor, A. S., Scarlat, A. I., and Calcan, A.

Abstract

To mitigate methane emission from urban natural gas distribution systems, it is crucial to understand local leak rates and occurrence rates. To explore urban methane emissions in cities outside the U.S., where significant emissions were found previously, mobile measurements were performed in 12 cities across eight countries. The surveyed cities range from medium size, like Groningen, NL, to large size, like Toronto, CA, and London, UK. Furthermore, this survey spanned across European regions from Barcelona, ES, to Bucharest, RO. The joint analysis of all data allows us to focus on general emission behavior for cities with different infrastructure and environmental conditions. We find that all cities have a spectrum of small, medium, and large methane sources in their domain. The emission rates found follow a heavy-tailed distribution, and the top 10% of emitters account for 60–80% of total emissions, which implies that strategic repair planning could help reduce emissions quickly. Furthermore, we compare our findings with inventory estimates for urban natural gas-related methane emissions from this sector in Europe. While cities with larger reported emissions were found to generally also have larger observed emissions, we find clear discrepancies between observation-based and inventory-based emission estimates for our 12 cities.

Published
2024
Full Text
View/download PDF

16. Empagliflozin in the treatment of heart failure with reduced ejection fraction in addition to background therapies and therapeutic combinations (EMPEROR-Reduced): a post-hoc analysis of a randomised, double-blind trial

Author

Verma, Subodh, primary, Dhingra, Nitish K, additional, Butler, Javed, additional, Anker, Stefan D, additional, Ferreira, Joao Pedro, additional, Filippatos, Gerasimos, additional, Januzzi, James L, additional, Lam, Carolyn S P, additional, Sattar, Naveed, additional, Peil, Barbara, additional, Nordaby, Matias, additional, Brueckmann, Martina, additional, Pocock, Stuart J, additional, Zannad, Faiez, additional, Packer, Milton, additional, Packer, M, additional, Anker, S, additional, Butler, J, additional, Filippatos, G, additional, Pocock, S, additional, Zannad, F, additional, Ferreira, JP, additional, Brueckmann, M, additional, George, J, additional, Jamal, W, additional, Welty, FK, additional, Palmer, M, additional, Clayton, T, additional, Parhofer, KG, additional, Pedersen, TR, additional, Greenberg, B, additional, Konstam, MA, additional, Lees, KR, additional, Carson, P, additional, Doehner, W, additional, Miller, A, additional, Haas, M, additional, Pehrson, S, additional, Komajda, M, additional, Anand, I, additional, Teerlink, J, additional, Rabinstein, A, additional, Steiner, T, additional, Kamel, H, additional, Tsivgoulis, G, additional, Lewis, J, additional, Freston, J, additional, Kaplowitz, N, additional, Mann, J, additional, Petrie, J, additional, Perrone, S, additional, Nicholls, S, additional, Janssens, S, additional, Bocchi, E, additional, Giannetti, N, additional, Verma, S, additional, Zhang, J, additional, Spinar, J, additional, Seronde, M-F, additional, Boehm, M, additional, Merkely, B, additional, Chopra, V, additional, Senni, M, additional, Taddi, S, additional, Tsutsui, H, additional, Choi, D-J, additional, Chuquiure, E, additional, La Rocca, HPB, additional, Ponikowski, P, additional, Juanatey, JRG, additional, Squire, I, additional, Januzzi, J, additional, Pina, I, additional, Bernstein, R, additional, Cheung, A, additional, Green, J, additional, Kaul, S, additional, Lam, C, additional, Lip, G, additional, Marx, N, additional, McCullough, P, additional, Mehta, C, additional, Rosenstock, J, additional, Sattar, N, additional, Scirica, B, additional, Shah, S, additional, Wanner, C, additional, Aizenberg, D, additional, Cartasegna, L, additional, Colombo Berra, F, additional, Colombo, H, additional, Fernandez Moutin, M, additional, Glenny, J, additional, Alvarez Lorio, C, additional, Anauch, D, additional, Campos, R, additional, Facta, A, additional, Fernandez, A, additional, Ahuad Guerrero, R, additional, Lobo Márquez, L, additional, Leon de la Fuente, RA, additional, Mansilla, M, additional, Hominal, M, additional, Hasbani, E, additional, Najenson, M, additional, Moises Azize, G, additional, Luquez, H, additional, Guzman, L, additional, Sessa, H, additional, Amuchástegui, M, additional, Salomone, O, additional, Perna, E, additional, Piskorz, D, additional, Sicer, M, additional, Perez de Arenaza, D, additional, Zaidman, C, additional, Nani, S, additional, Poy, C, additional, Resk, J, additional, Villarreal, R, additional, Majul, C, additional, Smith Casabella, T, additional, Sassone, S, additional, Liberman, A, additional, Carnero, G, additional, Caccavo, A, additional, Berli, M, additional, Budassi, N, additional, Bono, J, additional, Alvarisqueta, A, additional, Amerena, J, additional, Kostner, K, additional, Hamilton, A, additional, Begg, A, additional, Beltrame, J, additional, Colquhoun, D, additional, Gordon, G, additional, Sverdlov, A, additional, Vaddadi, G, additional, Wong, J, additional, Coller, J, additional, Prior, D, additional, Friart, A, additional, Leone, A, additional, Vervoort, G, additional, Timmermans, P, additional, Troisfontaines, P, additional, Franssen, C, additional, Sarens, T, additional, Vandekerckhove, H, additional, Van De Borne, P, additional, Chenot, F, additional, De Sutter, J, additional, De Vuyst, E, additional, Debonnaire, P, additional, Dupont, M, additional, Pereira Dutra, O, additional, Canani, LH, additional, Vieira Moreira, MdC, additional, de Souza, W, additional, Backes, LM, additional, Maia, L, additional, De Souza Paolino, B, additional, Manenti, ER, additional, Saporito, W, additional, Villaça Guimarães Filho, F, additional, Franco Hirakawa, T, additional, Saliba, LA, additional, Neuenschwander, FC, additional, de Freitas Zerbini, CA, additional, Gonçalves, G, additional, Gonçalves Mello, Y, additional, Ascenção de Souza, J, additional, Beck da Silva Neto, L, additional, Bocchi, EA, additional, Da Silveira, J, additional, de Moura Xavier Moraes Junior, JB, additional, de Souza Neto, JD, additional, Hernandes, M, additional, Finimundi, HC, additional, Sampaio, CR, additional, Vasconcellos, E, additional, Neves Mancuso, FJ, additional, Noya Rabelo, MM, additional, Rodrigues Bacci, M, additional, Santos, F, additional, Vidotti, M, additional, Simões, MV, additional, Gomes, FL, additional, Vieira Nascimento, C, additional, Precoma, D, additional, Helfenstein Fonseca, FA, additional, Ribas Fortes, JA, additional, Leães, PE, additional, Campos de Albuquerque, D, additional, Kerr Saraiva, JF, additional, Rassi, S, additional, Alves da Costa, FA, additional, Reis, G, additional, Zieroth, S, additional, Dion, D, additional, Savard, D, additional, Bourgeois, R, additional, Constance, C, additional, Anderson, K, additional, Leblanc, M-H, additional, Yung, D, additional, Swiggum, E, additional, Pliamm, L, additional, Pesant, Y, additional, Tyrrell, B, additional, Huynh, T, additional, Spiegelman, J, additional, Lavoie, J-P, additional, Hartleib, M, additional, Bhargava, R, additional, Straatman, L, additional, Virani, S, additional, Costa-Vitali, A, additional, Hill, L, additional, Heffernan, M, additional, Khaykin, Y, additional, Ricci, J, additional, Senaratne, M, additional, Zhai, A, additional, Lubelsky, B, additional, Toma, M, additional, Yao, L, additional, McKelvie, R, additional, Noronha, L, additional, Babapulle, M, additional, Pandey, A, additional, Curnew, G, additional, Lavoie, A, additional, Berlingieri, J, additional, Kouz, S, additional, Lonn, E, additional, Chehayeb, R, additional, Zheng, Y, additional, Sun, Y, additional, Cui, H, additional, Fan, Z, additional, Han, X, additional, Jiang, X, additional, Tang, Q, additional, Zhou, J, additional, Zheng, Z, additional, Zhang, X, additional, Zhang, N, additional, Zhang, Y, additional, Shen, A, additional, Yu, J, additional, Ye, J, additional, Yao, Y, additional, Yan, J, additional, Xu, X, additional, Wang, Z, additional, Ma, J, additional, Li, Y, additional, Li, S, additional, Lu, S, additional, Kong, X, additional, Song, Y, additional, Yang, G, additional, Yao, Z, additional, Pan, Y, additional, Guo, X, additional, Sun, Z, additional, Dong, Y, additional, Zhu, J, additional, Peng, D, additional, Yuan, Z, additional, Lin, J, additional, Yin, Y, additional, Jerabek, O, additional, Burianova, H, additional, Fiala, T, additional, Hubac, J, additional, Ludka, O, additional, Monhart, Z, additional, Vodnansky, P, additional, Zeman, K, additional, Foldyna, D, additional, Krupicka, J, additional, Podpera, I, additional, Busak, L, additional, Radvan, M, additional, Vomacka, Z, additional, Prosecky, R, additional, Cifkova, R, additional, Durdil, V, additional, Vesely, J, additional, Vaclavik, J, additional, Cervinka, P, additional, Linhart, A, additional, Brabec, T, additional, Miklik, R, additional, Bourhaial, H, additional, Olbrich, H-G, additional, Genth-Zotz, S, additional, Kemala, E, additional, Lemke, B, additional, Böhm, M, additional, Schellong, S, additional, Rieker, W, additional, Heitzer, T, additional, Ince, H, additional, Faghih, M, additional, Birkenfeld, A, additional, Begemann, A, additional, Ghanem, A, additional, Ujeyl, A, additional, von Haehling, S, additional, Dorsel, T, additional, Bauersachs, J, additional, Prull, M, additional, Weidemann, F, additional, Darius, H, additional, Nickenig, G, additional, Wilke, A, additional, Sauter, J, additional, Rauch-Kroehnert, U, additional, Frey, N, additional, Schulze, CP, additional, König, W, additional, Maier, L, additional, Menzel, F, additional, Proskynitopoulos, N, additional, Ebert, H-H, additional, Sarnighausen, H-E, additional, Düngen, H-D, additional, Licka, M, additional, Stellbrink, C, additional, Winkelmann, B, additional, Menck, N, additional, López-Sendón, JL, additional, de la Fuente Galán, L, additional, Delgado Jiménez, JF, additional, Manito Lorite, N, additional, Pérez de Juan Romero, M, additional, Galve Basilio, E, additional, Cereto Castro, F, additional, González Juanatey, JR, additional, Gómez, JJ, additional, Sanmartín Fernández, M, additional, Garcia-Moll Marimon, X, additional, Pascual Figal, D, additional, Bover Freire, R, additional, Bonnefoy Cudraz, E, additional, Jobbe Duval, A, additional, Tomasevic, D, additional, Habib, G, additional, Isnard, R, additional, Picard, F, additional, Khanoyan, P, additional, Dubois-Rande, J-L, additional, Galinier, M, additional, Roubille, F, additional, Alexandre, J, additional, Babuty, D, additional, Delarche, N, additional, Berneau, J-B, additional, Girerd, N, additional, Saxena, M, additional, Rosano, G, additional, Yousef, Z, additional, Clifford, C, additional, Arden, C, additional, Bakhai, A, additional, Boos, C, additional, Jenkins, G, additional, Travill, C, additional, Price, D, additional, Koenyves, L, additional, Lakatos, F, additional, Matoltsy, A, additional, Noori, E, additional, Zilahi, Z, additional, Andrassy, P, additional, Kancz, S, additional, Simon, G, additional, Sydo, T, additional, Vorobcsuk, A, additional, Kiss, RG, additional, Toth, K, additional, Szakal, I, additional, Nagy, L, additional, Barany, T, additional, Nagy, A, additional, Szolnoki, E, additional, Chopra, VK, additional, Mandal, S, additional, Rastogi, V, additional, Shah, B, additional, Mullasari, A, additional, Shankar, J, additional, Mehta, V, additional, Oomman, A, additional, Kaul, U, additional, Komarlu, S, additional, Kahali, D, additional, Bhagwat, A, additional, Vijan, V, additional, Ghaisas, NK, additional, Mehta, A, additional, Kashyap, J, additional, Kothari, Y, additional, TaddeI, S, additional, Scherillo, M, additional, Zacà, V, additional, Genovese, S, additional, Salvioni, A, additional, Fucili, A, additional, Fedele, F, additional, Cosmi, F, additional, Volpe, M, additional, Mazzone, C, additional, Esposito, G, additional, Doi, M, additional, Yamamoto, H, additional, Sakagami, S, additional, Oishi, S, additional, Yasaka, Y, additional, Tsuboi, H, additional, Fujino, Y, additional, Matsuoka, S, additional, Watanabe, Y, additional, Himi, T, additional, Ide, T, additional, Ichikawa, M, additional, Kijima, Y, additional, Koga, T, additional, Yuda, S, additional, Fukui, K, additional, Kubota, T, additional, Manita, M, additional, Fujinaga, H, additional, Matsumura, T, additional, Fukumoto, Y, additional, Kato, R, additional, Kawai, Y, additional, Hiasa, G, additional, Kazatani, Y, additional, Mori, M, additional, Ogimoto, A, additional, Inoko, M, additional, Oguri, M, additional, Kinoshita, M, additional, Okuhara, K, additional, Watanabe, N, additional, Ono, Y, additional, Otomo, K, additional, Sato, Y, additional, Matsunaga, T, additional, Takaishi, A, additional, Miyagi, N, additional, Uehara, H, additional, Takaishi, H, additional, Urata, H, additional, Kataoka, T, additional, Matsubara, H, additional, Matsumoto, T, additional, Suzuki, T, additional, Takahashi, N, additional, Imamaki, M, additional, Yoshitama, T, additional, Saito, T, additional, Sekino, H, additional, Furutani, Y, additional, Koda, M, additional, Shinozaki, T, additional, Hirabayashi, K, additional, Tsunoda, R, additional, Yonezawa, K, additional, Hori, H, additional, Yagi, M, additional, Arikawa, M, additional, Hashizume, T, additional, Ishiki, R, additional, Koizumi, T, additional, Nakayama, K, additional, Taguchi, S, additional, Nanasato, M, additional, Yoshida, Y, additional, Tsujiyama, S, additional, Nakamura, T, additional, Oku, K, additional, Shimizu, M, additional, Suwa, M, additional, Momiyama, Y, additional, Sugiyama, H, additional, Kobayashi, K, additional, Inoue, S, additional, Kadokami, T, additional, Maeno, K, additional, Kawamitsu, K, additional, Maruyama, Y, additional, Nakata, A, additional, Shibata, T, additional, Wada, A, additional, Cho, H-J, additional, Na, JO, additional, Yoo, B-S, additional, Choi, J-O, additional, Hong, SK, additional, Shin, J-H, additional, Cho, M-C, additional, Han, SH, additional, Jeong, J-O, additional, Kim, J-J, additional, Kang, SM, additional, Kim, D-S, additional, Kim, MH, additional, Llamas Esperon, G, additional, Illescas Díaz, J, additional, Fajardo Campos, P, additional, Almeida Alvarado, J, additional, Bazzoni Ruiz, A, additional, Echeverri Rico, J, additional, Lopez Alcocer, I, additional, Valle Molina, L, additional, Hernandez Herrera, C, additional, Calvo Vargas, C, additional, Padilla Padilla, FG, additional, Rodriguez Briones, I, additional, Chuquiure Valenzuela, EJJR, additional, Aguilera Real, ME, additional, Carrillo Calvillo, J, additional, Alpizar Salazar, M, additional, Cervantes Escárcega, JL, additional, Velasco Sanchez, R, additional, Al - Windy, N, additional, van Heerebeek, L, additional, Bellersen, L, additional, Brunner-La Rocca, H-P, additional, Post, J, additional, Linssen, GCM, additional, van de Wetering, M, additional, Peters, R, additional, van Stralen, R, additional, Groutars, R, additional, Smits, P, additional, Yilmaz, A, additional, Kok, WEM, additional, Van der Meer, P, additional, Dijkmans, P, additional, Troquay, R, additional, van Alem, AP, additional, Van de Wal, R, additional, Handoko, L, additional, Westendorp, ICD, additional, van Bergen, PFMM, additional, Rensing, BJWM, additional, Hoogslag, P, additional, Kietselaer, B, additional, Kragten, JA, additional, den Hartog, FR, additional, Alings, A, additional, Danilowicz-Szymanowicz, L, additional, Raczak, G, additional, Piesiewicz, W, additional, Zmuda, W, additional, Kus, W, additional, Podolec, P, additional, Musial, W, additional, Drelich, G, additional, Kania, G, additional, Miekus, P, additional, Mazur, S, additional, Janik, A, additional, Spyra, J, additional, Peruga, J, additional, Balsam, P, additional, Krakowiak, B, additional, Szachniewicz, J, additional, Ginel, M, additional, Grzybowski, J, additional, Chrustowski, W, additional, Wojewoda, P, additional, Kalinka, A, additional, Zurakowski, A, additional, Koc, R, additional, Debinski, M, additional, Fil, W, additional, Kujawiak, M, additional, Forys, J, additional, Kasprzak, M, additional, Krol, M, additional, Michalski, P, additional, Mirek-Bryniarska, E, additional, Radwan, K, additional, Skonieczny, G, additional, Stania, K, additional, Skoczylas, G, additional, Madej, A, additional, Jurowiecki, J, additional, Firek, B, additional, Wozakowska-Kaplon, B, additional, Cymerman, K, additional, Neutel, J, additional, Adams, K, additional, Balfour, P, additional, Deswal, A, additional, Djamson, A, additional, Duncan, P, additional, Hong, M, additional, Murray, C, additional, Rinde-Hoffman, D, additional, Woodhouse, S, additional, MacNevin, R, additional, Rama, B, additional, Broome-Webster, C, additional, Kindsvater, S, additional, Abramov, D, additional, Barettella, M, additional, Pinney, S, additional, Herre, J, additional, Cohen, A, additional, Vora, K, additional, Challappa, K, additional, West, S, additional, Baum, S, additional, Cox, J, additional, Jani, S, additional, Karim, A, additional, Akhtar, A, additional, Quintana, O, additional, Paukman, L, additional, Goldberg, R, additional, Bhatti, Z, additional, Budoff, M, additional, Bush, E, additional, Potler, A, additional, Delgado, R, additional, Ellis, B, additional, Dy, J, additional, Fialkow, J, additional, Sangrigoli, R, additional, Ferdinand, K, additional, East, C, additional, Falkowski, S, additional, Donahoe, S, additional, Ebrahimi, R, additional, Kline, G, additional, Harris, B, additional, Khouzam, R, additional, Jaffrani, N, additional, Jarmukli, N, additional, Kazemi, N, additional, Koren, M, additional, Friedman, K, additional, Herzog, W, additional, Silva Enciso, J, additional, Cheung, D, additional, Grover-McKay, M, additional, Hauptman, P, additional, Mikhalkova, D, additional, Hegde, V, additional, Hodsden, J, additional, Khouri, S, additional, McGrew, F, additional, Littlefield, R, additional, Bradley, P, additional, McLaurin, B, additional, Lupovitch, S, additional, Labin, I, additional, Rao, V, additional, Leithe, M, additional, Lesko, M, additional, Lewis, N, additional, Lombardo, D, additional, Mahal, S, additional, Malhotra, V, additional, Dauber, I, additional, Banerjee, A, additional, Needell, J, additional, Miller, G, additional, Paladino, L, additional, Munuswamy, K, additional, Nanna, M, additional, McMillan, E, additional, Mumma, M, additional, Napoli, M, additional, Nelson, W, additional, O'Brien, T, additional, Adlakha, A, additional, Onwuanyi, A, additional, Serota, H, additional, Schmedtje, J, additional, Paraschos, A, additional, Potu, R, additional, Sai-Sudhakar, C, additional, Saltzberg, M, additional, Sauer, A, additional, Shah, P, additional, Skopicki, H, additional, Bui, H, additional, Carr, K, additional, Stevens, G, additional, Tahirkheli, N, additional, Tallaj, J, additional, Yousuf, K, additional, Trichon, B, additional, Welker, J, additional, Tolerico, P, additional, Vest, A, additional, Vivo, R, additional, Wang, X, additional, Abadier, R, additional, Dunlap, S, additional, Weintraub, N, additional, Malik, A, additional, Kotha, P, additional, Zaha, V, additional, Kim, G, additional, Uriel, N, additional, Greene, T, additional, Salacata, A, additional, Arora, R, additional, Gazmuri, R, additional, Kobayashi, J, additional, Iteld, B, additional, Vijayakrishnan, R, additional, Dab, R, additional, Mirza, Z, additional, Marques, V, additional, Nallasivan, M, additional, Bensimhon, D, additional, Peart, B, additional, Saint-Jacques, H, additional, Barringhaus, K, additional, Contreras, J, additional, Gupta, A, additional, Koneru, S, additional, and Nguyen, V, additional

Published
2022
Full Text
View/download PDF

19. Chronic diarrhea

Author

Lavoie, J P, Lavoie, J P ( J P ), Schoster, Angelika; https://orcid.org/0000-0002-2162-6550, Lavoie, J P, Lavoie, J P ( J P ), and Schoster, Angelika; https://orcid.org/0000-0002-2162-6550

Published
2019

20. Probiotics in foals and horses

Author

Lavoie, J P, Lavoie, J P ( J P ), Schoster, Angelika; https://orcid.org/0000-0002-2162-6550, Lavoie, J P, Lavoie, J P ( J P ), and Schoster, Angelika; https://orcid.org/0000-0002-2162-6550

Published
2019

21. Anorexia and decreased food intake

Author

Lavoie, J P, Lavoie, J P ( J P ), Schoster, Angelika; https://orcid.org/0000-0002-2162-6550, Lavoie, J P, Lavoie, J P ( J P ), and Schoster, Angelika; https://orcid.org/0000-0002-2162-6550

Published
2019

22. Idiopathic colitis / typhlitis

Author

Lavoie, J P, Lavoie, J P ( J P ), Schoster, Angelika; https://orcid.org/0000-0002-2162-6550, Lavoie, J P, Lavoie, J P ( J P ), and Schoster, Angelika; https://orcid.org/0000-0002-2162-6550

Published
2019

46. Off-design performance of a single-stage transonic turbine

Author

Woinowsky-Krieger, M., Lavoie, J.-P., Vlasic, E.P., and Moustapha, S.H.

Subjects
Turbines -- Design and construction, Compressors -- Equipment and supplies, Science and technology
Abstract

This paper presents results of rig testing of a transonic, single-stage turbine at off-design conditions. Mapping of the 3.4 pressure ratio, 1.9 stage loading turbine ranged from 70 through 120 percent of design speed and 75 to 125 percent of design pressure ratio. Results show expansion efficiency dropping over 4 percent from 100 to 80 percent of design speed at design pressure ratio, while remaining within half a percent from 90 to 110 percent of design pressure ratio at design speed. Efficiency lapse rate from equivalent sea-level to cruise altitude Reynolds numbers at the design point was measured and found to be worth over 1.5 percent. Analyses of test results using a viscous three-dimensional solver showed very good agreement for the efficiency change with speed.

Published
1999

Catalog

Books, media, physical & digital resources
See catalog results