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Gol’tsman, G. N.; Smirnov, K. V. |
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Electron-phonon interaction in a two-dimensional electron gas of semiconductor heterostructures at low temperatures |
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2001 |
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Jetp Lett. |
Abbreviated Journal |
Jetp Lett. |
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74 |
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9 |
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474-479 |
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2DEG, AlGaAs/GaAs heterostructures |
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Theoretical and experimental works devoted to studying electron-phonon interaction in the two-dimensional electron gas of semiconductor heterostructures at low temperatures in the case of strong heating in an electric field under quasi-equilibrium conditions and in a quantizing magnetic field perpendicular to the 2D layer are considered. |
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0021-3640 |
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По итогам проектов российского фонда фундаментальных исследований. Проект РФФИ # 98-02-16897 Электрон-фононное взаимодействие в двумерном электронном газе полупроводниковых гетероструктур при низких температурах |
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1541 |
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Gol’tsman, G. N.; Okunev, O.; Chulkova, G.; Lipatov, A.; Semenov, A.; Smirnov, K.; Voronov, B.; Dzardanov, A.; Williams, C.; Sobolewski, R. |
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Title |
Picosecond superconducting single-photon optical detector |
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Journal Article |
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2001 |
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Appl. Phys. Lett. |
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Appl. Phys. Lett. |
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Volume |
79 |
Issue |
6 |
Pages |
705-707 |
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Keywords |
NbN SSPD, SNSPD |
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We experimentally demonstrate a supercurrent-assisted, hotspot-formation mechanism for ultrafast detection and counting of visible and infrared photons. A photon-induced hotspot leads to a temporary formation of a resistive barrier across the superconducting sensor strip and results in an easily measurable voltage pulse. Subsequent hotspot healing in ∼30 ps time frame, restores the superconductivity (zero-voltage state), and the detector is ready to register another photon. Our device consists of an ultrathin, very narrow NbN strip, maintained at 4.2 K and current-biased close to the critical current. It exhibits an experimentally measured quantum efficiency of ∼20% for 0.81 μm wavelength photons and negligible dark counts. |
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0003-6951 |
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1543 |
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Gol'tsman, Gregory; Semenov, Alexei; Smirnov, Konstantin; Voronov, Boris |
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Title |
Background limited quantum superconducting detector for submillimeter wavelengths |
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Conference Article |
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Year |
2001 |
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Proc. 12th Int. Symp. Space Terahertz Technol. |
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Proc. 12th Int. Symp. Space Terahertz Technol. |
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469-475 |
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Ti SQD, SQUID readout |
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1540 |
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Gershenson, M. E.; Gong, D.; Sato, T.; Karasik, B. S.; Sergeev, A. V. |
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Title |
Millisecond electron-phonon relaxation in ultrathin disordered metal films at millikelvin temperatures |
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2001 |
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Appl. Phys. Lett. |
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79 |
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2049-2051 |
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HEB detector, FIR, far infrared |
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RPLAB @ s @ heb_eph_interaction_Gershenzon |
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315 |
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Ganzevles, W. F. M.; Gao, J. R.; de Korte, P. A. J.; Klapwijk, T. M. |
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Direct response of microstrip line coupled Nb THz hot-electron bolometer mixers |
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2001 |
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Applied Physics Letters |
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Appl. Phys. Lett. |
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79 |
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15 |
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2483-2485 |
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0003-6951 |
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311 |
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