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Doped niobium superconducting nanowire single-photon detectors

Tao Jia, Lin Kang, Labao Zhang +5 more

Applied Physics BFeb 17, 20146 citations

Temperature dependence of niobium superconducting nanowire single-photon detectors in He-3 cryocooler

Tao -, Jia Jia, Chao +15 more

材料强烈取决于操作温度。我们基于做的铌制作了红外线敏感的铌 SNSPD (Nb *) 电影并且在 He-3 cryocooler 测量了他们。批评水流在 0.3 点来临到配对 de 水流 ? K。与在温度的减少，因此，我们在 1,521 的波长观察了计数率的单调的增加 ? nm 和黑暗计数率的指数的减少根本偏导水流。为做的 Nb 设备的黑暗计数的可能的起源也被讨论。

中国科学通报：英文版Jan 1, 20140 citations

Superconducting single-photon detector with a system efficiency of 93% operated in a 2.4 K space-application-compatible cryocooler

Peng Hu, Yuexue Ma, Hao Li +8 more

Abstract We report herein the development of a superconducting nanowire single-photon detector (SNSPD) that uses a hybrid cryocooler compatible with space applications. The hybrid cryocooler incorporates a two-stage high-frequency pulse-tube cryocooler and a Joule–Thomson loop, which produces a minimum temperature of 2.2 K. The SNSPD with the structure of sandwiched nanowires integrated in the cryocooler shows a maximum detection efficiency of 93% at 1550 nm, which makes it promising for deep-space communications and quantum information applications.Abstract We report herein the development of a superconducting nanowire single-photon detector (SNSPD) that uses a hybrid cryocooler compatible with space applications. The hybrid cryocooler incorporates a two-stage high-frequency pulse-tube cryocooler and a Joule–Thomson loop, which produces a minimum temperature of 2.2 K. The SNSPD with the structure of sandwiched nanowires integrated in the cryocooler shows a maximum detection efficiency of 93% at 1550 nm, which makes it promising for deep-space communications and quantum information applications.

Superconductor Science and TechnologyMay 19, 202115 citations

High-Operating-Temperature Superconducting Nanowire Single Photon Detectors

Angel E. Velasco, Daniel Cunnane, R.J. Briggs +11 more

Sep 4, 20160 citations

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

Shigehito Miki, Taro Yamashita, Hirotaka Terai +1 more

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 μA 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.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 μA 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.

arXiv:1303.6381Optics ExpressApr 17, 2013189 citations

Fiber Coupled Single Photon Detector with Niobium Superconducting Nanowire

Go Fujii, Daiji Fukuda, Takayuki Numata +4 more

Lecture notes of the Institute for Computer Sciences, Social Informatics and Telecommunications EngineeringJan 1, 20106 citations

Temperature dependence of niobium superconducting nanowire single-photon detectors in He-3 cryocooler

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