@Article{Slysz_etal2007,
author="S{\l}ysz, W.
and Wegrzecki, M.
and Bar, J.
and Grabiec, P.
and G{\'o}rska, M.
and Zwiller, V.
and Latta, C.
and B{\"o}hi, P.
and Pearlman, A. J.
and Cross, A. S.
and Pan, D.
and Kitaygorsky, J.
and Komissarov, I.
and Verevkin, A.
and Milostnaya, I.
and Korneev, A.
and Minayeva, O.
and Chulkova, G.
and Smirnov, K.
and Voronov, B.
and Gol{\textquoteright}tsman, G. N.
and Sobolewski, R.",
title="Fibre-coupled, single photon detector based on NbN superconducting nanostructures for quantum communications",
journal="J. Modern Opt.",
year="2007",
volume="54",
number="2-3",
pages="315--326",
optkeywords="NbN SSPD; SNSPD",
abstract="We present a novel, two-channel, single photon receiver based on two fibre-coupled, NbN, superconducting, single photon detectors (SSPDs). The SSPDs are nanostructured superconducting meanders and are known for ultrafast and efficient detection of visible-to-infrared photons. Coupling between the NbN detector and optical fibre was achieved using a micromechanical photoresist ring placed directly over the SSPD, holding the fibre in place. With this arrangement, we obtained coupling efficiencies up to{\thinspace}\~{}30{\%}. Our experimental results showed that the best receiver had a near-infrared system quantum efficiency of 0.33{\%} at 4.2 K. The quantum efficiency increased exponentially with the photon energy increase, reaching a few percent level for visible-light photons. The photoresponse pulses of our devices were limited by the meander high kinetic inductance and had the rise and fall times of approximately 250 ps and 5 ns, respectively. The receiver{\textquoteright}s timing jitter was in the 37 to 58 ps range, approximately 2 to 3 times larger than in our older free-space-coupled SSPDs. We stipulate that this timing jitter is in part due to optical fibre properties. Besides quantum communications, the two-detector arrangement should also find applications in quantum correlation experiments.",
optnote="exported from refbase (https://db.rplab.ru/refbase/show.php?record=1434), last updated on Sun, 16 May 2021 16:43:52 -0500",
issn="0950-0340",
doi="10.1080/09500340600779496",
opturl="http://www.tandfonline.com/doi/abs/10.1080/09500340600779496",
opturl="https://doi.org/10.1080/09500340600779496"
}