High performance fiber-coupled NbTiN superconducting nanowire single photon detectors with Gifford-McMahon cryocooler

被引：155
作者：
Miki, Shigehito [1 ]
Yamashita, Taro [1 ]
Terai, Hirotaka [1 ]
Wang, Zhen [1 ]
机构：
[1] Natl Inst Informat & Commun Technol, Adv ICT Res Inst, Nishi Ku, Kobe, Hyogo 6512492, Japan
来源：
OPTICS EXPRESS | 2013年 / 21卷 / 08期
关键词：
QUANTUM KEY DISTRIBUTION; SYSTEM; EFFICIENCY;
D O I：
10.1364/OE.21.010208
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present high performance fiber-coupled niobium titanium nitride superconducting nanowire single photon detectors fabricated on thermally oxidized silicon substrates. The best device showed a system detection efficiency (DE) of 74%, dark count rate of 100 c/s, and full width at half maximum timing jitter of 68 ps under a bias current of 18.0 mu A with a practical Gifford-McMahon cryocooler system. We also introduced six detectors into the cryocooler and confirmed that the system DE of all detectors was higher than 67% at the dark count rate of 100 c/s. (C) 2013 Optical Society of America
引用
收藏
页码：10208 / 10214
页数：7
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