Cryogenic Signal Processing based on Single-Flux-Quantum Circuit for Advanced Superconducting Nanostrip Single-Photon Detector Systems

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  • MIYAJIMA Shigeyuki
    Advanced ICT Research Institute, National Institute of Information and Communications Technology
  • TERAI Hirotaka
    Advanced ICT Research Institute, National Institute of Information and Communications Technology
  • YABUNO Masahiro
    Advanced ICT Research Institute, National Institute of Information and Communications Technology
  • CHINA Fumihiro
    Advanced ICT Research Institute, National Institute of Information and Communications Technology
  • MIKI Shigehito
    Advanced ICT Research Institute, National Institute of Information and Communications Technology Kobe University

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Other Title
  • 超伝導ナノストリップ単一光子検出器システムの高度化に向けた単一磁束量子回路に基づく極低温信号処理

Abstract

<p>A single-flux-quantum circuit is a promising device for a cryogenic signal processor for a superconducting nanostrip single photon detector （SNSPD） due to its high-speed operation, low power dissipation, and low timing jitter. The cryogenic signal processor based on the SFQ circuits can sense the output signals of multi-pixel SNSPDs with low timing jitter in a low temperature stage, which provides an advanced SNSPD system such as a high-count rate system, a two-photon coincidence system, a single-photon imaging system, and so forth. We have developed and demonstrated some SNSPD systems using an SFQ signal processor in a 0.1-W Gifford-McMahon （GM） cryocooler. In this review, we introduce a cryogenic signal processor based on SFQ circuits for advanced SNSPD systems.</p>

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