Zobrazeno 1 - 10
of 203
pro vyhledávání: '"Hayat, Alex"'
Autor:
Landau, Nadav, Panna, Dmitry, Brodbeck, Sebastian, Schneider, Christian, Höfling, Sven, Hayat, Alex
Two-photon absorption (TPA) allows accessing dark states of matter otherwise inaccessible to light, which serve as important building blocks for quantum information processing. In a semiconductor microcavity, TPA driven condensation of strongly-coupl
Externí odkaz:
http://arxiv.org/abs/2005.03711
Akademický článek
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Akademický článek
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Publikováno v:
Phys. Rev. B 97, 054512 (2018)
We develop a new theoretical approach for modelling a wide range of semiconductor-superconductor structures with arbitrary potential barriers and a spatially-dependent superconducting order parameter. We demonstrate asymmetry in the conductance spect
Externí odkaz:
http://arxiv.org/abs/1802.05276
Autor:
Zareapour, Parisa, Hayat, Alex, Zhao, Shu Yang F., Kreshchuk, Michael, Xu, Zhijun, Liu, T. S., Gu, G. D., Jia, Shuang, Cava, Robert J., Yang, H. -Y., Ran, Ying, Burch, Kenneth S.
Publikováno v:
New J. Phys. 19 (2017) 043026
We address the controversy over the proximity effect between topological materials and high T$_{c}$ superconductors. Junctions are produced between Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+\delta}$ and materials with different Fermi surfaces (Bi$_{2}$Te$_{3}$
Externí odkaz:
http://arxiv.org/abs/1705.03518
We propose a compact and highly-efficient scheme for complete Bell-state analysis using two-photon absorption in a superconducting proximity region of a semiconductor avalanche photodiode. One-photon transitions to the superconducting Cooper-pair bas
Externí odkaz:
http://arxiv.org/abs/1702.03944
We study a new effect of Cooper-pair-based two-photon gain in semiconductor-superconductor structures, showing broadband enhancement of ultrafast two-photon amplification. We further show that with the superconducting enhancement, at moderately high
Externí odkaz:
http://arxiv.org/abs/1601.02636
Autor:
Hallaji, Matin, Zhuang, Chao, Hayat, Alex, Motzoi, Felix, Khani, Botan, Wilhelm, Frank K., Steinberg, Aephraim M.
We study quantum control techniques, specifically Adiabatic Rapid Passage (ARP) and Gradient Ascent Pulse Engineering (GRAPE), for transferring atoms trapped in an optical lattice between different vibrational states. We compare them with each other
Externí odkaz:
http://arxiv.org/abs/1510.09186
Autor:
Dmochowski, Greg, Feizpour, Amir, Hallaji, Matin, Zhuang, Chao, Hayat, Alex, Steinberg, Aephraim
Publikováno v:
Phys. Rev. Lett. 116, 173002 (2016)
We present an experiment using a sample of laser-cooled Rb atoms to show that cross-phase modulation schemes continue to benefit from electromagnetically-induced transparency (EIT) even as the transparency window is made narrower than the signal band
Externí odkaz:
http://arxiv.org/abs/1506.07051
Autor:
Zareapour, Parisa, Hayat, Alex, Zhao, Shu Yang F., Kreshchuk, Michael, Lee, Yong Kiat, Reijnders, Anjan A., Jain, Achint, Xu, Zhijun, Liu, T. S., Gu, G. D., Jia, Shuang, Cava, Robert J., Burch, Kenneth S.
Publikováno v:
Physical Review B 90, 241106 (2014)
High-temperature superconductors exhibit a wide variety of novel excitations. If contacted with a topological insulator, the lifting of spin rotation symmetry in the surface states can lead to the emergence of unconventional superconductivity and nov
Externí odkaz:
http://arxiv.org/abs/1412.5636