Records |
Author |
Semenov, A. V.; Devyatov, I. A.; Korneev, A. A.; Smirnov, K. V.; Goltsman, G. N.; Melnikov, A. P. |
Title |
Derivation of expression for thermodynamic potential of “dirty” superconductor |
Type |
Journal Article |
Year |
2012 |
Publication |
Rus. J. Radio Electron. |
Abbreviated Journal |
Rus. J. Radio Electron. |
Volume |
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Issue |
4 |
Pages |
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Keywords |
dirty superconductor, Usadel theory, thermodynamic potential |
Abstract |
We derive a formula for thermodynamic potential of dirty superconductor which express it via isotropic quasiclassical Green functions of Usadel theory. Our result allows unify description of dynamic processes and fluctuations in superconducting nano-electronic devices. |
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Russian |
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7 pages |
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1824 |
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Author |
Чулкова, Галина Меркурьевна; Семёнов, Александр Владимирович; Тархов, Михаил Александрович; Гольцман, Григорий Наумович; Корнеев, Александр Александрович; Смирнов, Константин Владимирович |
Title |
О возможности использования PNR-SNPD в системах телекоммуникационной связи |
Type |
Journal Article |
Year |
2012 |
Publication |
Преподаватель ХХI век |
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Volume |
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Issue |
2 |
Pages |
244-246 |
Keywords |
PNR SSPD, SNSPD, SNPD |
Abstract |
Рассмотрена возможность применения сверхпроводникового нанополоскового детектора, разрешающего число фотонов (Photon-Number Resolving Superconducting Nanowire Photon Detector, PNR-SNPD), в качестве датчика приёмных модулей телекоммуникационных линий. Оценена мощность оптического импульса, необходимая для достижения приемлемо низкой доли ошибочных битов. |
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Russian |
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1826 |
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Author |
Korneeva, Yu. P.; Trifonov, A. V.; Vakhtomin, Yu. B.; Smirnov, K. V. |
Title |
Design of resonator for superconducting single-photon detector |
Type |
Journal Article |
Year |
2011 |
Publication |
Rus. J. Radio Electron. |
Abbreviated Journal |
Rus. J. Radio Electron. |
Volume |
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Issue |
12 |
Pages |
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Keywords |
SSPD optical resonator, SNSPD |
Abstract |
A resonator for superconducting single-photon detector is designed. Near 60% coupling with a radiation propagating from a dielectric substrate of optical fiber is demonstrated to be achieved for typical values of the detector’s film sheet resistance. |
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Russian |
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6 pages |
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1827 |
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Author |
Chen, J.; Kang, L.; Jin, B. B.; Xu, W. W.; Wu, P. H.; Zhang, W.; Jiang, L.; Li, N.; Shi, S. C.; Gol'tsman, G. N. |
Title |
Properties of terahertz superconducting hot electron bolometer mixers |
Type |
Journal Article |
Year |
2008 |
Publication |
Int. J. Terahertz Sci. Technol. |
Abbreviated Journal |
Int. J. Terahertz Sci. Technol. |
Volume |
1 |
Issue |
1 |
Pages |
37-41 |
Keywords |
NbN HEB mixers, noise temperature |
Abstract |
A quasi-optical superconducting niobium nitride (NbN) hot electron bolometer (HEB) mixer has been fabricated and measured in the terahertz (THz) frequency range of 0.5~2.52 THz. A receiver noise temperature of 2000 K at 2.52 THz has been obtained for the mixer without corrections. Also, the effect of a Parylene C anti-reflection (AR) coating on the silicon (Si) lens has been studied. |
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1417 |
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Author |
Divochiy, Aleksander; Marsili, Francesco; Bitauld, David; Gaggero, Alessandro; Leoni, Roberto; Mattioli, Francesco; Korneev, Alexander; Seleznev, Vitaliy; Kaurova, Nataliya; Minaeva, Olga; Gol'tsman, Gregory; Lagoudakis, Konstantinos G.; Benkhaoul, Moushab; Lévy, Francis; Fiore, Andrea |
Title |
Superconducting nanowire photon-number-resolving detector at telecommunication wavelengths |
Type |
Journal Article |
Year |
2008 |
Publication |
Nat. Photon. |
Abbreviated Journal |
Nat. Photon. |
Volume |
2 |
Issue |
5 |
Pages |
302-306 |
Keywords |
SSPD, photon-number-resolving |
Abstract |
Optical-to-electrical conversion, which is the basis of the operation of optical detectors, can be linear or nonlinear. When high sensitivities are needed, single-photon detectors are used, which operate in a strongly nonlinear mode, their response being independent of the number of detected photons. However, photon-number-resolving detectors are needed, particularly in quantum optics, where n-photon states are routinely produced. In quantum communication and quantum information processing, the photon-number-resolving functionality is key to many protocols, such as the implementation of quantum repeaters1 and linear-optics quantum computing2. A linear detector with single-photon sensitivity can also be used for measuring a temporal waveform at extremely low light levels, such as in long-distance optical communications, fluorescence spectroscopy and optical time-domain reflectometry. We demonstrate here a photon-number-resolving detector based on parallel superconducting nanowires and capable of counting up to four photons at telecommunication wavelengths, with an ultralow dark count rate and high counting frequency. |
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916 |
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