TY  - CONF
AU  - Korneev, A.
AU  - Minaeva, O.
AU  - Divochiy, A.
AU  - Antipov, A.
AU  - Kaurova, N.
AU  - Seleznev, V.
AU  - Voronov, B.
AU  - Gol’tsman, G.
AU  - Pan, D.
AU  - Kitaygorsky, J.
AU  - Slysz, W.
AU  - Sobolewski, R.
ED  - Dusek, M.
ED  - Hillery, M. S.
ED  - Schleich, W. P.
ED  - Prochazka, I.
ED  - Migdall, A. L.
ED  - Pauchard, A.
PY  - 2007
DA  - 2007//
TI  - Ultrafast and high quantum efficiency large-area superconducting single-photon detectors
T2  - Proc. SPIE
BT  - Proc. SPIE
SP  - 65830I (1 to 9)
VL  - 6583
PB  - Spie
KW  - SSPD
KW  - SNSPD
KW  - superconducting NbN films
KW  - infrared single-photon detectors
AB  - We present our latest generation of superconducting single-photon detectors (SSPDs) patterned from 4-nm-thick NbN films, as meander-shaped  0.5-mm-long and  100-nm-wide stripes. The SSPDs exhibit excellent performance parameters in the visible-to-near-infrared radiation wavelengths: quantum efficiency (QE) of our best devices approaches a saturation level of  30% even at 4.2 K (limited by the NbN film optical absorption) and dark counts as low as 2x10[super:-4] Hz. The presented SSPDs were designed to maintain the QE of large-active-area devices, but, unless our earlier SSPDs, hampered by a significant kinetic inductance and a nanosecond response time, they are characterized by a low inductance and GHz counting rates. We have designed, simulated, and tested the structures consisting of several, connected in parallel, meander sections, each having a resistor connected in series. Such new, multi-element geometry led to a significant decrease of the device kinetic inductance without the decrease of its active area and QE. The presented improvement in the SSPD performance makes our detectors most attractive for high-speed quantum communications and quantum cryptography applications.
UR  - https://doi.org/10.1117/12.723684
DO  - 10.1117/12.723684
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1249), last updated on Sun, 16 May 2021 15:29:29 -0500
ID  - Korneev_etal2007
ER  -