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Kurochkin, V. L.; Zverev, A. V.; Kurochkin, Y. V.; Ryabtsev, I. I.; Neizvestnyi, I. G.; Ozhegov, R. V.; Gol’tsman, G. N.; Larionov, P. A. |
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Long-distance fiber-optic quantum key distribution using superconducting detectors |
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Conference Article |
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Year |
2015 |
Publication |
Proc. Optoelectron. Instrum. |
Abbreviated Journal |
Proc. Optoelectron. Instrum. |
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Volume |
51 |
Issue |
6 |
Pages |
548-552 |
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QKD, SSPD, SNSPD |
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This paper presents the results of experimental studies on quantum key distribution in optical fiber using superconducting detectors. Key generation was obtained on an experimental setup based on a self-compensation optical circuit with an optical fiber length of 101.1 km. It was first shown that photon polarization encoding can be used for quantum key distribution in optical fiber over a distance in excess of 300 km. |
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8756-6990 |
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1342 |
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Semenov, A.; Goltsman, G.; Korneev, A. |
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Title |
Quantum detection by current carrying superconducting film |
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Journal Article |
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Year |
2001 |
Publication |
Phys. C: Supercond. |
Abbreviated Journal |
Phys. C: Supercond. |
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Volume |
351 |
Issue |
4 |
Pages |
349-356 |
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Keywords |
quantum detection, phase slip centers, quasiparticle diffusion |
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We describe a novel quantum detection mechanism in the superconducting film carrying supercurrent. The mechanism incorporates growing normal domain and breaking of superconductivity by the bias current. A single photon absorbed in the film creates transient normal spot that causes redistribution of the current and, consequently, increase of the current density in superconducting areas. When the current density exceeds the critical value, the film switches into resistive state and generates the voltage pulse. Analysis shows that a submicron-wide film of conventional low temperature superconductor operated in liquid helium may detect single far-infrared photon. The amplitude and duration of the voltage pulse are in the millivolt and picosecond range, respectively. The quantitative model is presented that allows simulation of the detector utilizing this detection mechanism. |
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0921-4534 |
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507 |
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Semenov, A.; Haas, P.; Ilin, K.; Hubers, H.; Siegel, M.; Engel, A.; Smirnov, A. |
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Energy resolution and sensitivity of a superconducting quantum detector |
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Journal Article |
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2007 |
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Phys. C: Supercond. |
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Phys. C: Supercond. |
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460-462 |
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1491-1492 |
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535 |
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Colombelli, R |
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FIR quantum cascade lasers at λ>20 μm and THz emitters at λ=80 μm |
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2002 |
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Phys. E: Low-dimensional Systems and Nanostructures |
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13 |
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2-4 |
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848-853 |
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1386-9477 |
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483 |
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Author |
Bell, Matthew; Sergeev, Andrei; Goltsman, Gregory; Bird, Jonathan; Verevkin, Aleksandr |
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Title |
Transition-edge sensors based on superconducting nanowires |
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2006 |
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Proc. APS March Meeting |
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Proc. APS March Meeting |
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B38.00001 |
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NbN nanowire TES |
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We present our experimental study of superconducting NbN nanowire-based sensor. The responsivity of the sensor is strongly affected by the superconducting transition width of the nanostructure, which, in turn, is determined by the phase slip centers (PCSs) dynamics. The fluctuations and noise properties of the sensor are also discussed, as well as the devices' behavior at high magnetic fields. The ultimate performance of the sensor and prospects of the devices will be discussed, as well. |
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1455 |
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