@InProceedings{Verevkin_etal2002,
author="Verevkin, A. A.
and Zhang, J.
and Slysz, W.
and Sobolewski, R.
and Lipatov, A. P.
and Okunev, O.
and Chulkova, G.
and Korneev, A.
and Gol{\textquoteright}tsman, G. N.",
editor="Ricklin, J. C.
and Voelz, D. G.",
title="Superconducting single-photon detectors for GHz-rate free-space quantum communications",
booktitle="Proc. SPIE",
year="2002",
publisher="SPIE",
volume="4821",
pages="447--454",
optkeywords="NbN SSPD; SNSPD; single-photon detector; thin-film superconductivity; quantum cryptography; ultrafast communications",
abstract="We report our studies on the performance of new NbN ultrathin-film superconducting single-photon detectors (SSPDs). Our SSPDs exhibit experimentally measured quantum efficiencies from ~ 5{\%} at wavelength $\lambda$ = 1550 nm up to ~10{\%} at $\lambda$ = 405 nm, with exponential, activation-energy-type spectral sensitivity dependence in the 0.4-$\mu$m - 3-$\mu$m wavelength range. Using a variable optical delay setup, we have shown that our NbN SSPDs can resolve optical photons with a counting rate up to 10 GHz, presently limited by the read-out electronics. The measured device jitter was below 35 ps under optimum biasing conditions. The extremely high photon counting rate, together with relatively high (especially for $\lambda$ > 1 $\mu$m) quantum efficiency, low jitter, and very low dark counts, make NbN SSPDs very promising for free-space communications and quantum cryptography.",
optnote="exported from refbase (https://db.rplab.ru/refbase/show.php?record=1523), last updated on Thu, 20 May 2021 22:22:15 -0500",
doi="10.1117/12.453542",
opturl="https://doi.org/10.1117/12.453542"
}