TY  - JOUR
AU  - Słysz, W.
AU  - Węgrzecki, M.
AU  - Bar, J.
AU  - Grabiec, P.
AU  - Górska, M.
AU  - Zwiller, V.
AU  - Latta, C.
AU  - Bohi, P.
AU  - Milostnaya, I.
AU  - Minaeva, O.
AU  - Antipov, A.
AU  - Okunev, O.
AU  - Korneev, A.
AU  - Smirnov, K.
AU  - Voronov, B.
AU  - Kaurova, N.
AU  - Gol’tsman, G.
AU  - Pearlman, A.
AU  - Cross, A.
AU  - Komissarov, I.
AU  - Verevkin, A.
AU  - Sobolewski, R.
PY  - 2006
DA  - 2006//
TI  - Fiber-coupled single-photon detectors based on NbN superconducting nanostructures for practical quantum cryptography and photon-correlation studies
T2  - Appl. Phys. Lett.
JO  - Appl. Phys. Lett.
SP  - 261113 (1 to 3)
VL  - 88
IS  - 26
KW  - SSPD
KW  - SNSPD
AB  - We have fabricated and tested a two-channel single-photon detector system based on two fiber-coupled superconducting single-photon detectors (SSPDs). Our best device reached the system quantum efficiency of 0.3% in the 1540-nm telecommunication wavelength with a fiber-to-detector coupling factor of about 30%. The photoresponse consisted of 2.5-ns-wide voltage pulses with a rise time of 250ps and timing jitter below 40ps. The overall system response time, measured as a second-order, photon cross-correlation function, was below 400ps. Our SSPDs operate at 4.2K inside a liquid-helium Dewar, but their optical fiber inputs and electrical outputs are at room temperature. Our two-channel detector system should find applications in practical quantum cryptography and in antibunching-type quantum correlation measurements.The authors would like to thank Dr. Marc Currie for his assistance in early time-resolved photoresponse measurements and Professor Atac Imamoglu for his support. This work was supported by the Polish Ministry of Science under Project No. 3 T11B 052 26 (Warsaw), RFBR 03-02-17697 and INTAS 03-51-4145 grants (Moscow), CRDF Grant No. RE2-2531-MO-03 (Moscow), RE2-2529-MO-03 (Moscow and Rochester), and US AFOSR FA9550-04-1-0123 (Rochester). Additional funding was provided by the grants from the MIT Lincoln Laboratory and BBN Technologies Corp.
SN  - 0003-6951
UR  - http://aip.scitation.org/doi/10.1063/1.2218105
UR  - https://doi.org/10.1063/1.2218105
DO  - 10.1063/1.2218105
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1449), last updated on Sun, 16 May 2021 20:57:28 -0500
ID  - Slysz_etal2006
ER  -