TY  - JOUR
AU  - Lusche, R.
AU  - Semenov, A.
AU  - Ilin, K.
AU  - Siegel, M.
AU  - Korneeva, Y.
AU  - Trifonov, A.
AU  - Korneev, A.
AU  - Goltsman, G.
AU  - Vodolazov, D.
AU  - Hübers, H-W
PY  - 2014
DA  - 2014//
TI  - Effect of the wire width on the intrinsic detection efficiency of superconducting-nanowire single-photon detectors
T2  - J. Appl. Phys.
JO  - J. Appl. Phys.
SP  - 043906 (1 to 9)
VL  - 116
IS  - 4
KW  - NbN SSPD
KW  - SNSPD
KW  - TaN
AB  - 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.
SN  - 0021-8979
UR  - http://aip.scitation.org/doi/10.1063/1.4891105
UR  - https://doi.org/10.1063/1.4891105
DO  - 10.1063/1.4891105
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1357), last updated on Thu, 13 May 2021 00:37:33 -0500
ID  - Lusche_etal2014
ER  -