Superconducting single-photon detector with a system efficiency of 93% operated in a 2.4 K space-application-compatible cryocooler. (19th May 2021)

• Record Type: Journal Article
• Authors: Hu, Peng; Ma, Yuexue; Li, Hao; Liu, Ziyao; Yu, Huiqin; Quan, Jia; Xiao, You; You, Lixing; Liu, Yanjie; Liang, Jingtao; Wang, Zhen
• Is Part Of: Superconductor science & technology. Volume 34:Number 7(2021)
• Publication Date: 2021-05-19
• Subjects: superconducting nanowire single-photon detector -- cryocooler -- space applications; Superconductivity -- Periodicals; Superconductors -- Periodicals; 537.623
• DOI: 10.1088/1361-6668/abff14
• Languages: English
• ISSNs: 0953-2048

Abstract

Abstract: 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.