引用本文：

郭江华,田侑成,龙林鑫,聂矗,张恒彬.基于电热模型的SNSPD 响应过程模拟与时间抖动分析[J].低温物理学报,2021,(4):207-212. [点击复制]
GUO Jianghua,TIAN Youcheng,LONG Linxin,NIE Chu,ZHANG Hengbing.Simulation of SNSPD Response Process and Time Jitter Analysis Based on Electrothermal Model[J].LOW TEMPERATURE PHYSICAL LETTERS,2021,(4):207-212. [点击复制]

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基于电热模型的SNSPD 响应过程模拟与时间抖动分析
郭江华^1,2, 田侑成^1,2, 龙林鑫^1,2, 聂矗^1,2, 张恒彬³
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(1.武汉大学, 水力机械过渡过程教育部重点实验室, 湖北武汉 430072;2.武汉大学, 水射流理论与新技术湖北省重点实验室, 湖北武汉 430072;3.钱学森空间技术实验室,北京10094)

摘要:

超导单光子探测器(SNSPD) 具有高探测效率, 低时间抖动、低暗计数率、高计数率等优点. 文章通过对纳米线电热过程的建模, 分析了纳米线的电热响应过程, 探讨了负载电阻、偏置电流和动态电感对 SNSPD 响应时间的影响, 结合蒙特卡洛方法来模拟研究了纳米线空间不均匀性对于SNSPD 时间抖动的影响, 结果表明随着纳米线空间不均匀性的增加, 纳米线的时间抖动不断增加, 并求出了典型的时间抖动约为7.73 ps

关键词: SNSPD, 响应时间, 电热模型, 蒙特卡洛, 时间抖动

DOI：

基金项目:

Simulation of SNSPD Response Process and Time Jitter Analysis Based on Electrothermal Model

GUO Jianghua^1,2, TIAN Youcheng^1,2, LONG Linxin^1,2, NIE Chu^1,2, ZHANG Hengbing³

(1.Key Laboratory of Hydraulic Machinery Transients (Wuhan University ) , Ministry of Education , Wuhan 430072;2.Hubei Key Laboratory of Waterjet Theory and New Technology (Wuhan University ) , Wuhan 430072;3.Qian Xuesen Laboratory of Space Technology , Beijing 100094)

Abstract:

The superconducting single photon detector (SNSPD) has the advantages of high detection efficiency, low timing jitter, low dark count rate, and high count rate. By modeling the nanowire electrothermal process, the article analyzes the nanowire electrothermal response process, discusses the effect of load resistance, bias current and dynamic inductance on the SNSPD response time, and uses the Monte Carlo method to simulate the effect of the nanowire spatial inhomogeneity on the timing jitter of SNSPD, the results show that as the spatial inhomogeneity of the nanowire increases, the time jitter of the nanowire continues to increase, and the typical time jitter is about 7.73 ps.

Key words: SNSPD, response time, electrothermal model, Monte Carlo, timing jitter

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