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Quantum Induced Coherence Light Detection and Ranging

Gewei QianXingqi XuShun-An Zhu ...+4 Da-Wei Wang
Dec 2022
摘要
Quantum illumination has been used to improve the signal-to-noise ratio inlight detection and ranging (LiDAR). Relying on coincidence detection, such aquantum LiDAR has a resolution limited by the response time of the detector andsuffers from jamming noise. Inspired by the Zou-Wang-Mandel experiment, webuild a quantum induced coherence (QuIC) LiDAR without directly detecting thephotons reflected from the object, intrinsically immune to environmental andjamming noise. The key element is that the reflected photons are used to erasethe which-way information of its entangled partners, whose light path isscanned to obtain the distance of the object via single photon interferencerather than coincidence detection. In QuIC LiDAR, the noise accompanying thereflected probe light from the object cannot enter our detector. This methodpaves a new way of battling noise in precise quantum electromagnetic sensingand ranging.
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