TY  - JOUR
AU  - Korneev, A.
AU  - Minaeva, O.
AU  - Rubtsova, I.
AU  - Milostnaya, I.
AU  - Chulkova, G.
AU  - Voronov, B.
AU  - Smirnov, K.
AU  - Seleznev, V.
AU  - Gol'tsman, G.
AU  - Pearlman, A.
AU  - Slysz, W.
AU  - Cross, A.
AU  - Alvarez, P.
AU  - Verevkin, A.
AU  - Sobolewski, R.
PY  - 2005
DA  - 2005//
TI  - Superconducting single-photon ultrathin NbN film detector
JO  - Quantum Electronics
SP  - 698
EP  - 700
VL  - 35
IS  - 8
KW  - NbN SSPD
KW  - SNSPD
AB  - Superconducting single-photon ultrathin NbN film detectors are studied. The development of manufacturing technology of detectors and the reduction of their operating temperature down to 2 K resulted in a considerable increase in their quantum efficiency, which reached in the visible region (at 0.56 μm) 30%—40%, i.e., achieved the limit determined by the absorption coefficient of the film. The quantum efficiency exponentially decreases with increasing wavelength, being equal to ~20% at 1.55 μm and ~0.02% at 5 μm. For the dark count rate of ~10-4s-1, the experimental equivalent noise power was 1.5×10-20 W Hz-1/2; it can be decreased in the future down to the record low value of 5×10-21 W Hz-1/2. The time resolution of the detector is 30 ps.
UR  - https://doi.org/10.1070/QE2005v035n08ABEH009152
DO  - 10.1070/QE2005v035n08ABEH009152
N1  - Сверхпроводящий однофотонный детектор на основе ультратонкой пленки NbN
ID  - Korneev_etal2005
ER  -