量子照射雷达技术的基本原理与研究进展  

The fundamental and research progress of quantum illumination radar

作　　者：刘凯[1,2] 张钦伟 顾永建[2] 李清亮[1] LIU Kai ZHANG Qinwei GU Yongjian LI Qingliang(National Key Laboratory of Electromagnetic Environment, China Research Institute of Radiowave Propagation, Qingdao 266107, China College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China)

机构地区：[1]中国电波传播研究所电波环境特性及模化技术重点实验室,青岛266107 [2]中国海洋大学信息科学与工程学院,青岛266100

出　　处：《电波科学学报》2017年第2期161-169,共9页Chinese Journal of Radio Science

基　　金：国家自然科学基金(No.61640009)

摘　　要：通过将传统雷达探测技术与现代量子信息处理技术有机结合,量子雷达在弱反射率目标探测上能够提供经典探测手段无法比拟的优势.作为非常具有潜力的量子雷达类型之一,量子照射雷达以纠缠光子为探测手段,依靠对量子关联特性的测量能够完成目标有无的判断.首先对量子雷达的概念和分类进行了简单介绍;然后对双光子纠缠态量子照射雷达和高斯态量子照射雷达的工作机理与关键技术进行了分析与讨论,并将两种方式的量子照射雷达与经典探测手段进行了性能对比,结果显示量子照射雷达在信噪比、准确性、抗噪性以及隐身性等方面都具有明显的优势;最后指出了量子照射雷达目前存在的问题和未来发展的方向.Combining the traditional radar and modern quantum information processing technology, quantum radar provides a strong advantage over the classical counterparts for detection of low reflectivity targets embedded in a thermal-noise bath. As one promising type of quantum radar, quantum illumination exploits entangled photons and quantum correlation measurement to detect whether the target is present or not. Here, we firstly introduce the concept and classification of quantum radar, then analyze the funda- mental and key technology of double-photon entangled state quantum illumination and Gaussian state quan- tum illumination. Comparing two kinds of quantum illumination radar with the classical detection meth- ods, we find quantum illumination radar has advantages in terms of signal noise ratio, accuracy, robustness and stealthiness. In the end, we discuss open questions and future development trends of quantum illumination radar.

关 键 词：量子雷达 量子照射 纠缠态 光子关联 

分 类 号：TN958.98[电子电信—信号与信息处理]