Temperature and current sensitivity extraction of optical superconducting transition-edge sensors based on a two-fluid model  

作　　者：Yue Geng Pei-Zhan Li Jia-Qiang Zhong Wen Zhang Zheng Wang Wei Miao Yuan Ren Sheng-Cai Shi 耿悦;李佩展;钟家强;张文;王争;缪巍;任远;史生才(Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing 210023,China;University of Science and Technology of China,Hefei 230026,China;Key Laboratory of Radio Astronomy,Chinese Academy of Sciences,Nanjing 210023,China)

机构地区：[1]Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing 210023,China [2]University of Science and Technology of China,Hefei 230026,China [3]Key Laboratory of Radio Astronomy,Chinese Academy of Sciences,Nanjing 210023,China

出　　处：《Chinese Physics B》2021年第9期594-598,共5页中国物理B（英文版）

基　　金：Project supported by the National Key Basic Research and Development Program of China(Grant No.2017YFA0304003);the National Natural Science Foundation of China(Grant Nos.U1831202,U1731119,U1931123,11773083,and 11873099);the Chinese Academy of Sciences(Grant Nos.QYZDJ-SSW-SLH043 and GJJSTD20180003);Jiangsu Province,China(Grant No.BRA2020411).

摘　　要：Optical superconducting transition-edge sensor(TES)has been widely used in quantum information,biological imaging,and fluorescence microscopy owing to its high quantum efficiency,low dark count,and photon number resolving capability.The temperature sensitivity(α_(I))and current sensitivity(β_(I))are important parameters for optical TESs,which are generally extracted from the complex impedance.Here we present a method to extractα_(I)andβ_(I)based on a two-fluid model and compare the calculated current-voltage curves,pulse response,and theoretical energy resolution with the measured ones.This method shows qualitative agreement that is suitable for further optimization of optical TESs.

关 键 词：transition-edge sensor single-photon detector two-fluid model 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]