低温工学
Online ISSN : 1880-0408
Print ISSN : 0389-2441
ISSN-L : 0389-2441
テーマ解説
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
宮嶋 茂之 寺井 弘高藪野 正裕知名 史博三木 茂人
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2024 年 59 巻 2 号 p. 88-96

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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.

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© 公益社団法人 低温工学・超電導学会 (旧 社団法人 低温工学協会)
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