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Superconductive Device: Cryogenic Signal Processing Technology using Superconducting Single-Flux-Quantum Logic Circuit

弘高 寺井, 茂人 三木, 太郎 山下, 圭正 牧瀬, 顕明 梶野, Hirotaka Terai, Shigehito Miki, Taro Yamashita, Kazumasa Makise, kenmei Kajino, Zhen Wang

Published Oct 1, 2013• 0 citations
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Superconducting nanowire single-photon detectors (SSPDs) with a system detection efficiency (SDE) of over 80% are now commercially available and being used in compact Gifford-McMahon refrigerators. However, not only high SDE, but also total performance including a low dark count rate, high maximum count rate and/or low timing jitter are important for many applications. A multi-pixel SSPD combined with signal processing using a single-flux-quantum (SFQ) circuit is a very promising approach to improve the system performance of SSPDs. In this review, we introduce our recent activities on cryogenic signal processing using SFQ circuits to realize high-performance multi-pixel SSPDs.