超导纳米线延迟线单光子成像器件进展及应用  

Progress and Applications of Superconducting Nanowire Delay-Line Single-Photon Imagers

作　　者：孔令东 赵清源[1,2] 涂学凑[1,2] 张蜡宝[1,2] 贾小氢[1,2] 康琳 陈健[1,2] 吴培亨[1,2] Kong Lingdong;Zhao Qingyuan;Tu Xuecou;Zhang Labao;Jia Xiaoqing;Kang Lin;Chen Jian;Wu Peiheng(School of Electronic Science and Engineering,Nanjing University,Nanjing,Jiangsu 210023,China;Research Institrte of Superconductor Electronics,Nanjing University,Nanjing,Jiangsu 210023,China)

机构地区：[1]南京大学电子科学与工程学院,江苏南京210023 [2]南京大学超导电子学研究所,江苏南京210023

出　　处：《激光与光电子学进展》2021年第10期17-27,共11页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(62071214,61801206);江苏省双创人才项目(20191479);江苏省双创团队项目(20192032)。

摘　　要：单光子成像技术通过对每个光子携带的时空信息进行探测,实现对物体图像的重构。基于超导纳米线的单光子探测器具有高效率、低时间抖动、宽响应波段的优势,非常适合单光子成像场景的需求。超导纳米线延迟线单光子成像器件是一种新型的单光子成像器件,它利用超导纳米线特有的高动态电感构造低速微波传输线,通过对输出电脉冲进行时间逻辑分析,同步读取光子的到达时刻和空间位置。本文将介绍这种成像器件的设计原理、几何结构和读出方式。同时,介绍基于此成像器件在强背景噪声下的单光子成像实验,证明了通过高性能器件和重构算法的联合优化所实现的成像系统性能增强。Single photon imaging is a technology that detects the spatial and temporal information carried by each photon to reconstruct an object image.Single photon detectors based on superconducting nanowires have the advantages of high efficiency,low time jttert,and wide response spectrum,which is suitable for single photon imaging applications.The superconducting nanowire delayline single-photon imager is a novel single-photon imager.It uilizes the high kinetic inductance of the superconducting nanowires to build an ultraslow microwave transmission line.The arrival time and spatial position of photons can be simultaneously measured by reading the arrival times of the output pulses.This study introduces the design principle,geometry structure,and readout method of this imager.Besides,we introduce a singlephoton imaging experiment in presence of strong background.noise to demonstrate the performance enhancement using the joint optimization of high-performance imaging devices.and reconstruction algorithms.

关 键 词：成像系统 单光子成像 超导器件 单光子探测器 超导纳米线 光子计数成像 计算成像 

分 类 号：O439[机械工程—光学工程]