Mobile superconducting strip photon detection system with efficiency over 70% at a 1550 nm wavelength

Author:

Zhang Xiaofu1ORCID,Ma Ruoyan1,Guo Zhimin2,Zhang Chengjun2,Chen Dai2,Huan Qingchang3,Huang Jia,Zhang Xingyu1ORCID,Xiao You1ORCID,Yu Huiqin,Liu Xiaoyu1,Li Hao1ORCID,Wang Zhen1,Xie Xiaoming1,You Lixing13ORCID

Affiliation:

1. University of Chinese Academy of Sciences

2. Photon Technology

3. Shanghai University

Abstract

We developed a mobile superconducting strip photon detector (SSPD) system operated in a liquid-helium Dewar. By adopting highly disordered NbTiN thin films, we successfully enhanced the detection performance of superconducting strips at higher operation temperatures and realized SSPDs with nearly saturated detection efficiency at 4.2 K. Then we customized a compact liquid-helium Dewar and a battery-based electronic module to minimize the SSPD system. A mobile SSPD system was integrated, which showed a system detection efficiency of 72% for a 1550 nm wavelength with a dark count rate of 200 cps and a timing jitter of 67.2 ps. The system has a weight of 40 kg and a power consumption of 500 mW, which can work continuously for 20 hours. The metrics can be further optimized in accordance with the various practical application platforms, such as aircraft, drones, etc.

Funder

Shanghai Sailing Program

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics

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