基于集成量子压缩光源的量子增强多普勒激光雷达(特邀)  

Quantum enhanced Doppler LiDAR based on integrated quantum squeezed light source(Invited)

作　　者：高丽[1] 张晓莉[1] 马菁汀[2] 姚文秀 王庆伟[1] 孙悦 刘尊龙 王雅君[1,3] 田龙 郑耀辉[1,3] Gao Li;Zhang Xiaoli;Ma Jingting;Yao Wenxiu;Wang Qingwei;Sun Yue;Liu Zunlong;Wang Yajun;Tian Long;Zheng Yaohui(State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Opto-Electronics,Shanxi University,Taiyuan 030006,China;Beijing Huahang Radio Measurement Institute,Beijing 102401,China;Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China)

机构地区：[1]山西大学光电研究所量子光学与光量子器件国家重点实验室,山西太原030006 [2]北京华航无线电测量研究所,北京102401 [3]山西大学极端光学协同创新中心,山西大原030006

出　　处：《红外与激光工程》2021年第3期63-69,共7页Infrared and Laser Engineering

基　　金：国家自然科学基金(62027821,11654002,11874250,11804207,11804206,62035015);山西省重点研发计划(201903D11001);山西省三晋学者特聘教授项目;山西省“1331”重点建设学科;山西省高等学校中青年拔尖创新人才。

摘　　要：传统激光雷达探测灵敏度不断提高,但仍然受激光光源的量子噪声以及探测端引入的额外噪声等因素限制。为了进一步提高激光雷达的探测性能,提出利用量子压缩态光场作为激光雷达的本振信号提高激光雷达探测精度的新方案,分析了所提出方案提高激光雷达探测精度的关键因素。制备了集成化低噪声压缩态光场并进行了激光雷达多普勒信息测量实验。实验结果表明,相较于传统相干多普勒激光雷达探测方案,所提方案实现了多普勒信息探测灵敏度3 dB的提升,为量子激光雷达中多普勒信息等微弱信号的探测提供研究途径。Though the measurement precision of the traditional LiDAR is gradually increased,it is still limited by the quantum noise of the optical field and the extra noise introduced by the detection process.To improve the detection performance of LiDAR,a new scheme using quantum squeezed state light field as local oscillator of LiDAR was proposed and the key factors for improving the detection precision of LiDAR was analyzed.Then an integrated low-noise squeezed light field was prepared,and the experiment of LiDAR Doppler information measurement was carried out.The results show that the Doppler information detection sensitivity by using quantum squeezed state is 3 dB higher than the traditional scheme of the coherent state light field as the local oscillator,which paves a research path for the detection of weak signals such as Doppler information.

关 键 词：压缩态 量子增强 激光雷达 量子雷达 

分 类 号：N93[自然科学总论] TN241[电子电信—物理电子学]