基于量子纠缠光源的量子成像技术的研究进展  

Research progress of quantum imaging technology based on quantum entangled light source

作　　者：谢良波 嵇长银 周牧 王勇 曹静阳 胡钟尹 XIE Liangbo;JI Changyin;ZHOU Mu;WANG Yong;CAO Jingyang;HU Zhongyin(School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065

出　　处：《激光杂志》2021年第10期1-9,共9页Laser Journal

基　　金：国家自然科学基金项目(No.61901076,61704015);重庆市自然科学基金项目(No.cstc2020jcyj-msxmX0842,cstc2020jcyj-msxmX0865);重庆市教委科学技术研究项目(No.KJZD-K202000605,KJQN201900603)。

摘　　要：高分辨光学成像技术是国防军事、医疗等领域的重要研究方向。经典光学成像分辨率受到散粒噪声极限的限制无法进一步提高,并且成像光路易受周围环境的影响,导致成像质量急速下降。随着量子信息技术的发展,量子成像以其非定域性、抗干扰能力强等优点受到广泛关注。首先介绍了量子成像的基本原理、系统组成与性能特点;然后,对基于纠缠光源的量子成像技术的研究概况进行了综述。主要介绍了利用自发参量下转换(SPDC)过程,制备量子纠缠光源的相位匹配、准相位匹配两种技术;重点分析和讨论了基于纠缠光源的量子成像技术,从较慢的机械扫描式演变到基于液晶空间光调制器(LCSLM)的快速扫描式的过程;并结合量子成像的发展历程,对其未来应用趋势进行了展望,指出高清、三维、彩色、实时量子成像技术是未来特别值得关注的发展方向。High resolution optical imaging technology is an important research direction in national defense,military,medical and other fields. The classical optical imaging resolution can not be further improved due to the limit of shot noise,and the imaging light is affected by the surrounding environment,resulting in the rapid decline of imaging quality. With the development of quantum information technology( QIT),quantum imaging has attracted extensive attention because of its nonlocality and strong anti-interference ability. In this paper,the basic principle,system composition and performance characteristics of QIT are introduced firstly. Then the R&D status of QIT based on quantum entangled light source( QELS) is reviewed. Two techniques,phase matching and quasi phase matching,which can be used to prepare QELS based on the process of spontaneous parametric down conversion( SPDC) were mainly introduced;The evolution of QELS-based QIT from slow mechanical scanning to fast scanning based on liquid crystal spatial light modulator( LCSLM) is analyzed and discussed. Combined with the development stage of QIT,its future application trend is prospected,and it is suggested that high-definition,three-dimensional,color and real-time QIT are the development direction worthy of special attention in the future.

关 键 词：量子成像 纠缠光源 空间光调制器 自发参量下转换 非定域性 

分 类 号：TN248[电子电信—物理电子学]