Single photon response of superconducting nanowire single photon detector

被引：0
|
作者：
YOU LiXing
机构：
来源：
Science Bulletin | 2010年 / Z1期
基金：
中国国家自然科学基金;
关键词：
quantum communication; single photon detection; superconducting nanowire single photon detector; kinetic inductance;
D O I：
暂无
中图分类号：
TN15 [光电器件、光电管];
学科分类号：
0803 ;
摘要：
Single photon detection is one of the key technologies for quantum key distribution in quantum communication. As a novel single photon detection technology, superconducting nanowire single photon detector (SNSPD) surpasses conventional semiconducting single photon detectors with high count rate and low dark count rate. In this article, we introduce SNSPD fabricated from NbN ultrathin superconducting film and lab-based SNSPD system. The characteristics of single photon response pulse of SNSPD are analyzed in detail. Also discussed is the relationship between waveform of single photon response and system bandwidth. Circuit model is made to analyze the performance of SNSPD. The simulation result agrees well with the experimental data. Those results are valuable for understanding the mechanism of SNSPD and building future SNSPD system for quantum communication.
引用
收藏
页码：441 / 445
页数：5
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