You Lixing, Quan Jia, Wang Yong, Ma Yuexue, Yang Xiaoyan, Liu Yanjie, Li Hao, Li Jianguo, Wang Juan, Liang Jingtao, Wang Zhen, Xie Xiaoming
Opt Express. 2018 Feb 5;26(3):2965-2971. doi: 10.1364/OE.26.002965.
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 that could ultimately be 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.
超导纳米线单光子探测器（SNSPD）推动了量子密钥分发和深空通信等多个前沿科技领域的发展。然而，受现有冷却技术的限制，过去所有的实验演示都仅适用于地面应用。在这项工作中，我们展示了一种使用混合式低温制冷机的SNSPD系统，该系统最终可能与太空应用兼容。该SNSPD系统的最低工作温度为2.8K，最大系统探测效率超过50%，定时抖动为48皮秒，为各种太空应用铺平了道路。
