基于路径纠缠光子对的抗噪声量子成像

Noise-robust quantum imaging based on path-entangled photon pairs

  • 摘要: 无交互量子成像是一种基于Zou-Wang-Mandel量子干涉效应的新型量子成像技术。本文利用路径纠缠的波长非简并光子对,实现了探针光子与成像光子的解耦,显著提升了主动照明成像系统对背景噪声光子的抑制能力。实验结果表明:该系统可在远强于探针光子强度的同波长背景噪声环境中工作,成像帧率超过30帧/s,且无需引入符合计数或“点云重建”等后处理技术。该技术有望将实验室中的量子成像推向实际应用,为对背景噪声光子抑制要求严苛的场景提供关键支撑。

     

    Abstract: Interaction-free quantum imaging is a novel quantum imaging technique based on the Zou-Wang-Mandel quantum interference effect. This work utilized the path-entangled wavelength-nondegenerate photon pairs to achieve decoupling between probe photons and imaging photons, significantly enhancing the background noise photon suppression capability of active illumination imaging systems. Experimental results demonstrate that the system can operate in environments with same-wavelength background noise far stronger than the probe photon intensity while maintaining an imaging frame rate exceeding 30 frame/s, without requiring post-processing techniques such as coincidence counting or reconstruction. This technology promises to advance laboratory-based quantum imaging into practical applications, providing pivotal supports for the scenarios demanding stringent suppression of background noise photons.

     

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