中国物理B ›› 2023, Vol. 32 ›› Issue (11): 118501-118501.doi: 10.1088/1674-1056/acd8ac

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Increasing linear flux range of SQUID amplifier using self-feedback effect

Ying-Yu Chen(陈滢宇)1,3,4, Chao-Qun Wang(王超群)1,3,4, Yuan-Xing Xu(徐元星)2, Yue Zhao(赵越)1,3,4, Li-Liang Ying(应利良)1,3,4, Hang-Xing Xie(谢颃星)2, Bo Gao(高波)1,3,4,†, and Zhen Wang(王镇)1,3,4   

  1. 1 Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences(CAS), Shanghai 200050, China;
    2 Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
    3 CAS Center for Excellence in Superconducting Electronics(CENSE), Shanghai 200050, China;
    4 University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2023-02-15 修回日期:2023-05-15 接受日期:2023-05-25 出版日期:2023-10-16 发布日期:2023-10-24
  • 通讯作者: Bo Gao E-mail:bo_f_gao@mail.sim.ac.cn
  • 基金资助:
    Project supported by the Fund from China National Space Administration (CNSA) (Grant No. D050104) and the Fund for Low Energy Gamma Ray Detection Research Based on SQUID Technique, the Superconducting Electronics Facility (SELF) of Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences.

Increasing linear flux range of SQUID amplifier using self-feedback effect

Ying-Yu Chen(陈滢宇)1,3,4, Chao-Qun Wang(王超群)1,3,4, Yuan-Xing Xu(徐元星)2, Yue Zhao(赵越)1,3,4, Li-Liang Ying(应利良)1,3,4, Hang-Xing Xie(谢颃星)2, Bo Gao(高波)1,3,4,†, and Zhen Wang(王镇)1,3,4   

  1. 1 Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences(CAS), Shanghai 200050, China;
    2 Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
    3 CAS Center for Excellence in Superconducting Electronics(CENSE), Shanghai 200050, China;
    4 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2023-02-15 Revised:2023-05-15 Accepted:2023-05-25 Online:2023-10-16 Published:2023-10-24
  • Contact: Bo Gao E-mail:bo_f_gao@mail.sim.ac.cn
  • Supported by:
    Project supported by the Fund from China National Space Administration (CNSA) (Grant No. D050104) and the Fund for Low Energy Gamma Ray Detection Research Based on SQUID Technique, the Superconducting Electronics Facility (SELF) of Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences.

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摘要： Superconducting quantum interference devices (SQUIDs) are low-noise amplifiers that are essential for the readouts of translation edge sensors (TESs). The linear flux range is an important parameter for SQUID amplifiers, especially those controlled by high-bandwidth digital flux-locked-loop circuits. A large linear flux range conduces to accurately measuring the input signal and also increasing the multiplexing factor in the time-division multiplexed (TDM) readout scheme of the TES array. In this work, we report that the linear flux range of an SQUID can be improved by using self-feedback effect. When the SQUID loop is designed to be asymmetric, a voltage-biased SQUID shows an asymmetric current-flux (I-Φ) response curve. The linear flux range is improved along the I-Φ curve with a shallow slope. The experimental results accord well with the numerical simulations. The asymmetric SQUID will be able to serve as a building block in the development of the TDM readout systems for large TES arrays.

关键词: translation edge sensors, superconducting quantum interference device (SQUID), self-feedback

Abstract: Superconducting quantum interference devices (SQUIDs) are low-noise amplifiers that are essential for the readouts of translation edge sensors (TESs). The linear flux range is an important parameter for SQUID amplifiers, especially those controlled by high-bandwidth digital flux-locked-loop circuits. A large linear flux range conduces to accurately measuring the input signal and also increasing the multiplexing factor in the time-division multiplexed (TDM) readout scheme of the TES array. In this work, we report that the linear flux range of an SQUID can be improved by using self-feedback effect. When the SQUID loop is designed to be asymmetric, a voltage-biased SQUID shows an asymmetric current-flux (I-Φ) response curve. The linear flux range is improved along the I-Φ curve with a shallow slope. The experimental results accord well with the numerical simulations. The asymmetric SQUID will be able to serve as a building block in the development of the TDM readout systems for large TES arrays.

Key words: translation edge sensors, superconducting quantum interference device (SQUID), self-feedback

中图分类号:  (Superconducting quantum interference devices (SQUIDs))

  • 85.25.Dq
85.25.Oj (Superconducting optical, X-ray, and γ-ray detectors (SIS, NIS, transition edge))