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Smirnov, Konstantin; Vachtomin, Yury; Divochiy, Alexander; Antipov, Andrey; Goltsman, Gregory |
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Dependence of dark count rates in superconducting single photon detectors on the filtering effect of standard single mode optical fibers |
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2015 |
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Appl. Phys. Express |
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Appl. Phys. Express |
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8 |
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2 |
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022501 (1 to 4) |
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IOP Publishing |
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1882-0778 |
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RPLAB @ sasha @ smirnov2015dependence |
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1049 |
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Smirnov, K. V.; Vakhtomin, Yu. B.; Divochiy, A. V.; Ozhegov, R. V.; Pentin, I. V.; Slivinskaya, E. V.; Tarkhov, M. A.; Gol’tsman, G. N. |
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Single-photon detectors for the visible and infrared parts of the spectrum based on NbN nanostructures |
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2009 |
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Proc. Progress In Electromagnetics Research Symp. |
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Proc. Progress In Electromagnetics Research Symp. |
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863-864 |
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SSPD, SNSPD |
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The research by the group of Moscow State Pedagogical University into the hot-electron phenomena in thin superconducting films has led to the development of new types ofdetectors [1, 2] and their use both in fundamental and applied studies [3–6]. In this paper, wepresent the results of the development and fabrication of receiving systems for the visible andinfrared parts of the spectrum optimised for use in telecommunication systems and quantumcryptography. |
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Moscow, Russia |
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RPLAB @ sasha @ smirnovsession |
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1050 |
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Sidorova, Maria V.; Divochiy, Alexander; Vakhtomin, Yury B.; Smirnov, Konstantin V. |
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Ultrafast superconducting single-photon detector with reduced-size active area coupled to a tapered lensed single-mode fiber |
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Conference Article |
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2015 |
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Proc. SPIE |
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9504 |
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950408 (1 to 9) |
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International Society for Optics and Photonics |
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RPLAB @ sasha @ sidorova2015ultrafast |
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1051 |
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Kitaygorsky, J.; Zhang, J.; Verevkin, A.; Sergeev, A.; Korneev, A.; Matvienko, V.; Kouminov, P.; Smirnov, K.; Voronov, B.; Gol'tsman, G.; Sobolewski, R. |
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Title |
Origin of dark counts in nanostructured NbN single-photon detectors |
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2005 |
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IEEE Trans. Appl. Supercond. |
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IEEE Trans. Appl. Supercond. |
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15 |
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2 |
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545-548 |
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SSPD dark counts, SNSPD, dark counts rate |
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We present our study of dark counts in ultrathin (3.5 to 10 nm thick), narrow (120 to 170 nm wide) NbN superconducting stripes of different lengths. In experiments, where the stripe was completely isolated from the outside world and kept at temperature below the critical temperature Tc, we detected subnanosecond electrical pulses associated with the spontaneous appearance of the temporal resistive state. The resistive state manifested itself as generation of phase-slip centers (PSCs) in our two-dimensional superconducting stripes. Our analysis shows that not far from Tc, PSCs have a thermally activated nature. At lowest temperatures, far below Tc, they are created by quantum fluctuations. |
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1057 |
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Shcheslavskiy, V.; Morozov, P.; Divochiy, A.; Vakhtomin, Yu.; Smirnov, K.; Becker, W. |
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Title |
Ultrafast time measurements by time-correlated single photon counting coupled with superconducting single photon detector |
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2016 |
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Rev. Sci. Instrum. |
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87 |
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053117 (1 to 5) |
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SSPD, SNSPD, TCSPC, jitter |
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Time resolution is one of the main characteristics of the single photon detectors besides quantum efficiency and dark count rate. We demonstrate here an ultrafast time-correlated single photon counting (TCSPC) setup consisting of a newly developed single photon counting board SPC-150NX and a superconducting NbN single photon detector with a sensitive area of 7 × 7 μm. The combination delivers a record instrument response function with a full width at half maximum of 17.8 ps and system quantum efficiency ~5% at wavelength of 1560 nm. A calculation of the root mean square value of the timing jitter for channels with counts more than 1% of the peak value yielded about 7.6 ps. The setup has also good timing stability of the detector–TCSPC board. |
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