TY  - JOUR
AU  - Yamashita, Taro
AU  - Miki, Shigehito
AU  - Qiu, Wei
AU  - Fujiwara, Mikio
AU  - Sasaki, Masahide
AU  - Wang, Zhen
PY  - 2010
DA  - 2010//
TI  - Temperature dependent performances of superconducting nanowire single-photon detectors in an ultralow-temperature region
JO  - IEEE Trans. Appl. Supercond.
SP  - 336
EP  - 339
VL  - 21
IS  - 3
KW  - SNSPD
AB  - We report on the performance of a fiber-coupled superconducting nanowire single-photon detector (SNSPD) from 4 K down to the ultralow temperature of 16 mK for a 1550 nm wave length. The system detection efficiency (DE) increased with de creasing the temperature and reached the considerably high value of 15% with a dark count rate less than 100 cps below 1.5 K, even without an optical cavity structure. We also observed saturation of the system DE in its bias current dependency at 16 mK, which indicates that the device DE of our SNSPD nearly reached intrinsic DE despite the device having a large active area of 20 μm × 20 μm. The dark count was finite even at 16 mK and the black body radiation becomes its dominant origin in the low temperatures for fiber-coupled devices.
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=656), last updated on Sun, 22 May 2016 16:20:17 -0500
ID  - Yamashita_etal2010
ER  -