Zobrazeno 1 - 10
of 62
pro vyhledávání: '"J R, Leonard"'
Autor:
J. R. Leonard, Lunhui Hu, A. A. High, A. T. Hammack, Congjun Wu, L. V. Butov, K. L. Campman, A. C. Gossard
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-6 (2021)
Previous interference experiments on indirect excitons found dislocation-like phase singularities that could not be explained by common phase defects. Here, the authors explain these features in terms of the moiré pattern of interference of condensa
Externí odkaz:
https://doaj.org/article/9d99da877a254a39ab509c5d8da50c72
Autor:
J. R. Leonard, A. A. High, A. T. Hammack, M. M. Fogler, L. V. Butov, K. L. Campman, A. C. Gossard
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-5 (2018)
Geometric phases in matter are of fundamental interest. Here the authors observe the Pancharatnam–Berry phase in matter waves by imaging light interference patterns from cold gases of indirect excitons and find long-range coherent spin transport in
Externí odkaz:
https://doaj.org/article/5f21a8a3ec054274af5baab4c0d2a830
Autor:
J. R. Leonard, Leonid Butov, Michael M. Fogler, Dmitri E. Nikonov, Chao Xu, Ian A. Young, Chelsey Dorow
Publikováno v:
Nano Letters. 19:5373-5379
An indirect exciton is a bound state of an electron and a hole in spatially separated layers. Two-dimensional indirect excitons can be created optically in heterostructures containing double quantum wells or atomically thin semiconductors. We study t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8611e8b3d224f53a4e6f230120df77b1
https://doi.org/10.1021/acs.nanolett.9b01877
https://doi.org/10.1021/acs.nanolett.9b01877
Autor:
Alexander High, Aaron Hammack, Lun-Hui Hu, J. R. Leonard, K. L. Campman, Arthur C. Gossard, Leonid Butov, Congjun Wu
Publikováno v:
Nature Communications
Nature Communications, Vol 12, Iss 1, Pp 1-6 (2021)
Nature Communications, Vol 12, Iss 1, Pp 1-6 (2021)
Interference patterns provide direct measurement of coherent propagation of matter waves in quantum systems. Superfluidity in Bose–Einstein condensates of excitons can enable long-range ballistic exciton propagation and can lead to emerging long-sc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f20978dda9cd59ea1eb5013d2971928
http://europepmc.org/articles/PMC7895953
http://europepmc.org/articles/PMC7895953
Autor:
Congjun Wu, Alexander High, Aaron Hammack, Leonid Butov, Lun-Hui Hu, Arthur C. Gossard, K. L. Campman, J. R. Leonard
Publikováno v:
Conference on Lasers and Electro-Optics.
We present a new mechanism, the moiré effect, which leads to the appearance of dislocations in interference patterns. Remote interference dislocations in condensate of indirect excitons originate from the moiré effect and evidence exciton superflui
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17b254c6893b8df30188bc20e0562f60
https://doi.org/10.1364/cleo_qels.2021.fw2q.2
https://doi.org/10.1364/cleo_qels.2021.fw2q.2
Autor:
Michael M. Fogler, Leonid Butov, Aaron Hammack, Alexander High, J. R. Leonard, Arthur C. Gossard, K. L. Campman
Publikováno v:
Leonard, JR; High, AA; Hammack, AT; Fogler, MM; Butov, LV; Campman, KL; et al.(2018). Pancharatnam-Berry phase in condensate of indirect excitons. NATURE COMMUNICATIONS, 9(1), 2158. doi: 10.1038/s41467-018-04667-x. UC San Diego: Retrieved from: http://www.escholarship.org/uc/item/1534302g
Nature communications, vol 9, iss 1
Nature Communications, Vol 9, Iss 1, Pp 1-5 (2018)
Nature Communications
Nature communications, vol 9, iss 1
Nature Communications, Vol 9, Iss 1, Pp 1-5 (2018)
Nature Communications
The Pancharatnam–Berry phase is a geometric phase acquired over a cycle of parameters in the Hamiltonian governing the evolution of the system. Here, we report on the observation of the Pancharatnam–Berry phase in a condensate of indirect exciton
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::235f26d05898ee763edc4d2d82c3dd72
http://www.escholarship.org/uc/item/1534302g
http://www.escholarship.org/uc/item/1534302g
Autor:
Michael M. Fogler, J. R. Leonard, Arthur C. Gossard, K. L. Campman, Leonid Butov, Aaron Hammack, Alexander High
Publikováno v:
Conference on Lasers and Electro-Optics.
We report on the observation of the Pancharatnam-Berry phase in a condensate of indirect excitons realized in a GaAs coupled quantum well structure. Our measurements indicate long range coherent spin transport.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::134802be3c25d7a2685800a1fd2cee48
https://doi.org/10.1364/cleo_qels.2018.fm3h.3
https://doi.org/10.1364/cleo_qels.2018.fm3h.3
Autor:
J. R. Leonard
Publikováno v:
Exciton Transport Phenomena in GaAs Coupled Quantum Wells ISBN: 9783319697321
This chapter presents the observation of the spin transport of spatially indirect excitons in GaAs coupled quantum wells (CQW). The spin relaxation time of indirect excitons is orders of magnitude longer than the spin relaxation time of direct excito
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15ee82b3471235d87fa19c85b4ebdffd
https://doi.org/10.1007/978-3-319-69733-8_5
https://doi.org/10.1007/978-3-319-69733-8_5
Autor:
J. R. Leonard
Publikováno v:
Exciton Transport Phenomena in GaAs Coupled Quantum Wells ISBN: 9783319697321
This chapter presents an excitonic conveyer—a moving lattice created by a set of seven independently controlled electrodes controlled by AC voltages to create a moving sine wave potential. The excitonic conveyer realizes controlled transport of exc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb9eeec4fbe911cbca5cae5b059d3b45
https://doi.org/10.1007/978-3-319-69733-8_4
https://doi.org/10.1007/978-3-319-69733-8_4
Autor:
J. R. Leonard
Publikováno v:
Exciton Transport Phenomena in GaAs Coupled Quantum Wells ISBN: 9783319697321
This chapter presents exciton transport in a potential energy gradient—a ramp—created by a shaped electrode at constant voltage. We utilize the ability to control exciton energy by electrode shape and design the shape of a top electrode on the sa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63282cefcc84b7e20c9d5cc16b111cd8
https://doi.org/10.1007/978-3-319-69733-8_2
https://doi.org/10.1007/978-3-319-69733-8_2