Latching is a serious issue in superconducting nanowire single-photon detector (SNSPD) technology. By extensively studying the electrical transportation characteristics of SNSPD with different bias schemes, we conclude that latching is a result of the improper bias to SNSPD. With the quasi-constant-voltage bias scheme, the intrinsic nonlatching nature of SNSPD is observed and discussed. The SNSPD working in the nonlatching bias shows a smaller jitter and a higher pulse amplitude than that in the previous anti-latching method. The quantum efficiency of SNSPD with the pulsed photon frequency up to 3 GHz is measured successfully, which further proves the nonlatching operation of SNSPD.
@article{arxiv.1211.1425,
title = {Nonlatching Superconducting Nanowire Single-Photon Detection with Quasi-Constant-Voltage Bias},
author = {Deng-Kuan Liu and Si-Jing Chen and Li-Xing You and Yong-Liang Wang and Shigehito Miki and Zhen Wang and Xiao-Ming Xie and Mian-Heng Jiang},
journal= {arXiv preprint arXiv:1211.1425},
year = {2015}
}