摘要
Frequency-modulated continuous-wave(FMCW)Lidar has the characteristics of high-ranging accuracy,noise immunity,and synchronous speed measurement,which makes it a candidate for the next generation of vehicle Lidar.In this work,an FMCW Lidar working at the single-photon level is demonstrated based on quantum compressed sensing,and the target distance is recovered from the sparse photon detection,in which the detection sensitivity,bandwidth,and compression ratio are improved significantly.Our Lidar system can achieve 3 GHz bandwidth detection at photon count rates of a few thousand,making ultra-long-distance FMCW Lidar possible.
作者
Liu Yang
Hongqi Niu
Shuxiao Wu
Jianyong Hu
Mingyong Jing
Zhixing Qiao
Changgang Yang
Guofeng Zhang
Chengbing Qin
Ruiyun Chen
Liantuan Xiao
Suotang Jia
杨柳;牛鸿琪;吴舒啸;胡建勇;景明勇;乔志星;杨昌钢;张国峰;秦成兵;陈瑞云;肖连团;贾锁堂(State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Laser Spectroscopy,Shanxi University,Taiyuan 030006,China;Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China;College of Medical Imaging,Shanxi Medical University,Taiyuan 030001,China)
基金
supported by the National Natural Science Foundation of China(Nos.62105193,62127817,62075120,62075122,U22A2091,62222509,62205187,and 62305200)
the Shanxi Province Science and Technology Major Special Project(No.202201010101005)
the National Key Research and Development Program of China(No.2022YFA1404201)
the Program for Changjiang Scholars and Innovative Research Team in University(No.IRT_17R70)
the China Postdoctoral Science Foundation(No.2022M722006)
the Shanxi Province Science and Technology Innovation Talent Team(No.202204051001014)
the Science and Technology Cooperation Project of Shanxi Province(No.202104041101021)
the Shanxi“1331 Project”and 111 Project(No.D18001).
