基于铟镓砷/磷化铟的低噪声高速单光子探测器。

Low-noise high-speed InGaAs/InP-based single-photon detector.

作者信息

Chen Xiuliang, Wu E, Wu Guang, Zeng Heping

机构信息

State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China.

出版信息

Opt Express. 2010 Mar 29;18(7):7010-8. doi: 10.1364/OE.18.007010.

DOI:10.1364/OE.18.007010

PMID:20389721

Abstract

A low-noise high-speed InGaAs/InP-based single-photon detector was demonstrated with a double-self-differencing spike signal cancellation technique. A photon-number resolving method was used to analyze the ratio of avalanche signal to background noise. By adding a post-self-differencing circuit to the pre-self-differencing circuit, the signal to noise ratio was improved by 11.0 dB. The typical error count probability was as low as 2.1% and 6.4% at the detection efficiency of 20.6% and 30.5%, respectively.

摘要

采用双自差分尖峰信号消除技术展示了一种基于InGaAs/InP的低噪声高速单光子探测器。使用光子数分辨方法分析雪崩信号与背景噪声的比率。通过在预自差分电路中添加后自差分电路，信噪比提高了11.0 dB。在检测效率分别为20.6%和30.5%时，典型误计数概率分别低至2.1%和6.4%。