超导NbN纳米线电热仿真及时间抖动分析  

Electrothermal simulation and timing jitter analysis of superconducting NbN nanowire

作　　者：龙林鑫 田侑成 郭江华[1,2] 聂矗[1,2] 张恒彬 Long Linxin;Tian Youcheng;Guo Jianghua;Nie Chu;Zhang Hengbin(Key Laboratory of Hydraulic Machinery Transients,Ministry of Education,Wuhan University,Wuhan 430072,China;Hubei Key Laboratory of Waterjet Theory and New Technology,Wuhan University,Wuhan 430072,China;Qian Xuesen Laboratory of Space Technology,Beijing 100094,China)

机构地区：[1]武汉大学,水力机械过渡过程教育部重点实验室,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,武汉430072 [3]钱学森空间技术实验室,北京100094

出　　处：《低温与超导》2020年第9期32-35,41,共5页Cryogenics and Superconductivity

基　　金：国家重点研发计划(2017YFB0503302);湖北省科技专项(2019BKJ009)资助。

摘　　要：通过建立电热模型,仿真分析了光子响应后纳米线上的热扩散过程和电信号产生过程,并研究分析了动态电感和外电路电阻对输出电压脉冲的影响。在此基础上,采用蒙托卡罗方法进一步分析了纳米线空间不均匀性所引起的时间抖动,约为6.4785 ps。Based on an electrothermal model,the paper analyzed the thermal diffusion process and electrical signal generation process of nanowires after photon response,and also studied and analyzed the effects of dynamic inductance and external circuit resistance on the output voltage pulse.Based on this,the timing jitter caused by the spatial inhomogeneity of the nanowires was further analyzed using the Monte Carlo method,which was about 6.4785 ps.

关 键 词：超导纳米单光子探测器 电热模型 蒙特卡洛 时间抖动 

分 类 号：O511.9[理学—低温物理]