纳米线
探测器
物理
光子
超导电性
光电子学
光子计数
测距
电子工程
计算机科学
光学
电信
工程类
量子力学
作者
Chandra M. Natarajan,Michael G. Tanner,Robert H. Hadfield
标识
DOI:10.1088/0953-2048/25/6/063001
摘要
Single-photon detectors based on superconducting nanowires (SSPDs or SNSPDs) have rapidly emerged as a highly promising photon-counting technology for infrared wavelengths. These devices offer high efficiency, low dark counts and excellent timing resolution. In this review, we consider the basic SNSPD operating principle and models of device behaviour. We give an overview of the evolution of SNSPD device design and the improvements in performance which have been achieved. We also evaluate device limitations and noise mechanisms. We survey practical refrigeration technologies and optical coupling schemes for SNSPDs. Finally we summarize promising application areas, ranging from quantum cryptography to remote sensing. Our goal is to capture a detailed snapshot of an emerging superconducting detector technology on the threshold of maturity.
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