High efficiency, large-active-area superconducting nanowire single-photon detectors

Gu Min^a), Zhang La-Bao^a), Kang Lin^a)†, Zhao Qing-Yuan^a), Jia Tao^a), Wan Chao^a), Xu Rui-Ying^a), Yang Xiao-Zhong^a), Wu Pei-Heng^a), Zhang Yong^b), Xia Jin-Song^b)

Reset time and timing jitter. (a) The oscilloscope traces of the response pulse of the SNSPD biased at I _B = 8.3 μA, when DCR is about 100 cps. The decay time of the SNSPD ( τ ) was defined as the time required for the pulse to decay from 90% to 10% of the maximum of the pulse (red arrows). The inset image gives the falling edge of the pulse (blue line) and the fitting curve (red line). (b) Histogram of timing jitter.