解説
超伝導ストリップ光子検出技術の新展開
―最新動向トピックを中心に―
キーワード:
Superconducting nano strip photon detector,
superconducting strip photon detector,
superconducting single flux circuit
2024 年 59 巻 1 号 p. 11-18
詳細
2024 年 59 巻 1 号 p. 11-18
Photon absorption in a superconducting strip with a thickness of only a few nanometers produces excited quasiparticles eventually produce a localized resistive region. A Superconducting Strip Photon Detector （SSPD） based on this phenomenon was proposed in 2001, and today, the detection efficiency is approaching 100 %, the dark count rate and timing jitter is overwhelmingly low as compared to other single photon detectors. SSPD has already positioned as an indispensable technology in various advanced technological fields such as quantum technology, live cell observation, LIDAR, and deep space optical communication technology. Recently, there have been several reports that break down stereotypes about what an SSPD should be. In this article, I focus on intriguing topics concerning the latest research and development trends in SSPD.
