测距
激光雷达
物理
光子
噪音(视频)
光学
连贯性(哲学赌博策略)
量子传感器
探测器
干扰
量子
计算机科学
量子纠缠
量子网络
电信
量子力学
人工智能
图像(数学)
热力学
作者
Gewei Qian,Xingqi Xu,Shun-An Zhu,Chenran Xu,Fei Gao,Vladislav V. Yakovlev,Xu Liu,Shi-Yao Zhu,Da-Wei Wang
标识
DOI:10.1103/physrevlett.131.033603
摘要
Quantum illumination has been proposed and demonstrated to improve the signal-to-noise ratio (SNR) in light detection and ranging (LiDAR). When relying on coincidence detection alone, such a quantum LiDAR is limited by the timing jitter of the detector and suffers from jamming noise. Inspired by the Zou-Wang-Mandel experiment, we design, construct, and validate a quantum induced coherence (QuIC) LiDAR which is inherently immune to ambient and jamming noises. In traditional LiDAR the direct detection of the reflected probe photons suffers from deteriorating SNR for increasing background noise. In QuIC LiDAR we circumvent this obstacle by only detecting the entangled reference photons, whose single-photon interference fringes are used to obtain the distance of the object, while the reflected probe photons are used to erase path information of the reference photons. In consequence, the noise accompanying the reflected probe light has no effect on the detected signal. We demonstrate such noise resilience with both LED and laser light to mimic the background and jamming noise. The proposed method paves a new way of battling noise in precise quantum electromagnetic sensing and ranging.
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