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.

中文翻译：

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系统效率为 93% 的超导单光子探测器在 2.4 K 空间应用兼容的低温冷却器中运行

我们在此报告了使用与空间应用兼容的混合低温冷却器的超导纳米线单光子探测器 (SNSPD) 的开发。混合低温冷却器采用两级高频脉冲管低温冷却器和焦耳-汤姆逊回路，产生的最低温度为 2.2 K。集成在低温冷却器中的夹心纳米线结构的 SNSPD 显示最高检测效率为 93 % 在 1550 nm 处，这使其有希望用于深空通信和量子信息应用。