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

Autor: Chen, Qi, Ge, Rui, Zhang, Labao, Li, Feiyan, Zhang, Biao, Dai, Yue, Fei, Yue, Wang, Xiaohan, Jia, Xiaoqing, Zhao, Qingyuan, Tu, Xuecou, Kang, Lin, Chen, Jian, Wu, Peiheng
Rok vydání: 2020
Předmět:
Druh dokumentu: Working Paper
Popis: 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.
Databáze: arXiv