%0 Journal Article
%T Effect of the wire width on the intrinsic detection efficiency of superconducting-nanowire single-photon detectors
%A Lusche, R.
%A Semenov, A.
%A Ilin, K.
%A Siegel, M.
%A Korneeva, Y.
%A Trifonov, A.
%A Korneev, A.
%A Goltsman, G.
%A Vodolazov, D.
%A Hübers, H-W
%J J. Appl. Phys.
%D 2014
%V 116
%N 4
%@ 0021-8979
%F Lusche_etal2014
%O exported from refbase (https://db.rplab.ru/refbase/show.php?record=1357), last updated on Thu, 13 May 2021 00:37:33 -0500
%X A thorough spectral study of the intrinsic single-photon detection efficiency in superconducting TaN and NbN nanowires with different widths has been performed. The experiment shows that the cut-off of the intrinsic detection efficiency at near-infrared wavelengths is most likely controlled by the local suppression of the barrier for vortex nucleation around the absorption site. Beyond the cut-off quasi-particle diffusion in combination with spontaneous, thermally activated vortex crossing explains the detection process. For both materials, the reciprocal cut-off wavelength scales linearly with the wire width where the scaling factor agrees with the hot-spot detection model.
%K NbN SSPD
%K SNSPD
%K TaN
%R 10.1063/1.4891105
%U http://aip.scitation.org/doi/10.1063/1.4891105
%U https://doi.org/10.1063/1.4891105
%P 043906 (1 to 9)