Mid-infrared single photon detector with superconductor Mo$_{80}$Si$_{20}$ nanowire

Qi Chen; Rui Ge; Labao Zhang; Feiyan Li; Biao Zhang; Yue Dai; Yue Fei; Xiaohan Wang; Xiaoqing Jia; Qingyuan Zhao; Xuecou Tu; Lin Kang; Jian Chen; Peiheng Wu

Mid-infrared single photon detector with superconductor Mo$_{80}$Si$_{20}$ nanowire

Applied Physics 2020-11-16 v1 Instrumentation and Methods for Astrophysics Instrumentation and Detectors Quantum Physics

Authors: Qi Chen , Rui Ge , Labao Zhang , Feiyan Li , Biao Zhang , Yue Dai , Yue Fei , Xiaohan Wang , Xiaoqing Jia , Qingyuan Zhao , Xuecou Tu , Lin Kang , Jian Chen , Peiheng Wu

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Abstract

A mid-infrared single photon detector (MIR-SNSPD) was reported based on 30 nm-wide superconductor molybdenum silicide nanowires in this work. Saturated quantum efficiencies (QEs) were achieved at the wavelength ranging from 1.55 to 5.07 micrometer in experiments. At the same time, the intrinsic dark count rate (DCR) was below 100 cps. Thus, this device produced a noise equivalent power (NEP) of 4.5 * 10-19 W/sqrt(Hz). The results provide the foundation of developing 10 micrometer-SNSPD for the applications of infrared astronomy observation.

Keywords

mid-infrared single photon detector molybdenum silicide nanowire quantum efficiency dark count rate noise equivalent power infrared astronomy

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@article{arxiv.2011.06699,
  title  = {Mid-infrared single photon detector with superconductor Mo$_{80}$Si$_{20}$ nanowire},
  author = {Qi Chen and Rui Ge and Labao Zhang and Feiyan Li and Biao Zhang and Yue Dai and Yue Fei and Xiaohan Wang and Xiaoqing Jia and Qingyuan Zhao and Xuecou Tu and Lin Kang and Jian Chen and Peiheng Wu},
  journal= {arXiv preprint arXiv:2011.06699},
  year   = {2020}
}

Mid-infrared single photon detector with superconductor Mo$_{80}$Si$_{20}$ nanowire

Abstract

Keywords

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