@Article{Menshchikov_etal1997,
author="Men{\textquoteright}shchikov, E. M.
and Gogidze, I. G.
and Sergeev, A. V.
and Elant{\textquoteright}ev, A. I.
and Kuminov, P. B.
and Gol{\textquoteright}tsman, G. N.
and Gershenzon, E. M.",
title="Superconducting fast detector based on the nonequilibrium inductance response of a film of niobium nitride",
journal="Tech. Phys. Lett.",
year="1997",
volume="23",
number="6",
pages="486--488",
optkeywords="NbN KID",
abstract="A new type of fast detector is proposed, whose operation is based on the variation of the kinetic inductance of a superconducting film caused by nonequilibrium quasiparticles created by the electromagnetic radiation. The speed of the detector is determined by the rate of multiplication of photo-excited quasiparticles, and is nearly independent of the temperature, being less than 1 ps for NbN. Models based on the Owen-Scalapino scheme give a good description of the experimentally determined dependence of the power-voltage sensitivity of the detector on the modulation frequency. The lifetime of the quasiparticles is determined, and it is shown that the reabsorption of nonequilibrium phonons by the condensate has a substantial effect even in ultrathin NbN films 5 nm thick, and results in the maximum possible quantum yield. A low concentration of equilibrium quasiparticles and a high quantum yield result in a detectivity D*=1012 W-1{\textperiodcentered}Hz1/2 at a temperature T=4.2 K and D*=1016 W-1{\textperiodcentered}cm{\textperiodcentered} Hz1/2 at T=1.6 K.",
optnote="exported from refbase (https://db.rplab.ru/refbase/show.php?record=1593), last updated on Tue, 25 May 2021 21:18:54 -0500",
issn="1063-7850",
doi="10.1134/1.1261724",
opturl="http://link.springer.com/10.1134/1.1261724",
opturl="https://doi.org/10.1134/1.1261724"
}