Superconducting nanowire single photon detection system for space applications

28 Nov 2017 · You Lixing, Quan Jia, Wang yong, Ma Yuexue, Yang Xiaoyan, Liu Yanjie, Li Hao, Li Jianguo, Wang Juan, Liang Jingtao, Wang Zhen, Xie Xiaoming ·

Superconducting nanowire single photon detectors (SNSPDs) have advanced various frontier scientific and technological fields such as quantum key distribution and deep space communications. However, limited by available cooling technology, all past experimental demonstrations have had ground-based applications. In this work we demonstrate a SNSPD system using a hybrid cryocooler compatible with space applications. With a minimum operational temperature of 2.8 K, this SNSPD system presents a maximum system detection efficiency of over 50% and a timing jitter of 48 ps, which paves the way for various space applications.

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