中国物理B ›› 2021, Vol. 30 ›› Issue (9): 98501-098501.doi: 10.1088/1674-1056/ac11ce

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

Yue Geng(耿悦)1,2,3, Pei-Zhan Li(李佩展)1,2,3, Jia-Qiang Zhong(钟家强)1,3, Wen Zhang(张文)1,3,†, Zheng Wang(王争)1,3, Wei Miao(缪巍)1,3, Yuan Ren(任远)1,3, and Sheng-Cai Shi(史生才)1,3,‡   

  1. 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
  • 收稿日期:2021-03-30 修回日期:2021-06-23 接受日期:2021-07-07 出版日期:2021-08-19 发布日期:2021-09-06
  • 通讯作者: Wen Zhang, Sheng-Cai Shi E-mail:wzhang@pmo.ac.cn;scshi@pmo.ac.cn
  • 基金资助:
    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), and Jiangsu Province, China (Grant No. BRA2020411).

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

Yue Geng(耿悦)1,2,3, Pei-Zhan Li(李佩展)1,2,3, Jia-Qiang Zhong(钟家强)1,3, Wen Zhang(张文)1,3,†, Zheng Wang(王争)1,3, Wei Miao(缪巍)1,3, Yuan Ren(任远)1,3, and Sheng-Cai Shi(史生才)1,3,‡   

  1. 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
  • Received:2021-03-30 Revised:2021-06-23 Accepted:2021-07-07 Online:2021-08-19 Published:2021-09-06
  • Contact: Wen Zhang, Sheng-Cai Shi E-mail:wzhang@pmo.ac.cn;scshi@pmo.ac.cn
  • Supported by:
    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), and 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 (αI) and current sensitivity (βI) are important parameters for optical TESs, which are generally extracted from the complex impedance. Here we present a method to extract αI and βI 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

Abstract: 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 (αI) and current sensitivity (βI) are important parameters for optical TESs, which are generally extracted from the complex impedance. Here we present a method to extract αI and βI 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.

Key words: transition-edge sensor, single-photon detector, two-fluid model

中图分类号:  (Superconducting optical, X-ray, and γ-ray detectors (SIS, NIS, transition edge))

  • 85.25.Oj
85.25.Am (Superconducting device characterization, design, and modeling)