Coherent Two-Photon Atmospheric Lidar Based on Up-Conversion Quantum Erasure,ACS Photonics

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Coherent Two-Photon Atmospheric Lidar Based on Up-Conversion Quantum Erasure
ACS Photonics ( IF 6.5 ) Pub Date : 2024-08-15 , DOI: 10.1021/acsphotonics.4c00302
Chong Wang ₁ , Kexin Yang ₁ , Luoyuan Qu ₂ , Yudie Li ₁ , Ruocan Zhao ₁ , Xianghui Xue _{1,

3,

4} , Tingdi Chen _{1,

4} , Xiankang Dou ₄

Affiliation

The Hong-Ou-Mandel (HOM) effect, also called two-photon interference, which is pivotal in quantum information processing, serves as the foundation for our coherent two-photon wind detection method, achieving time-frequency discrimination. Our method capitalizes on the complete erasure of phase and color distinctions with up-conversion detectors, allowing for the observation of HOM interference among independently sourced photons without necessitating delay tuning or active synchronization. The integration of quantum erasure enhances the bandwidth in both space-time and frequency domains, paving the way for ultrafast, continuous velocity detection up to tens of km/s. The demonstration uses just 14% pulse energy of previous levels, enabling a wind detection range up to 16 km, marking a quantum leap in remote sensing capabilities.

中文翻译：

基于上转换量子擦除的相干双光子大气激光雷达

红欧曼德尔（HOM）效应，也称为双光子干涉，在量子信息处理中至关重要，是我们相干双光子风检测方法的基础，实现时频辨别。我们的方法利用上转换探测器完全消除相位和颜色差异，允许观察独立来源的光子之间的 HOM 干扰，而无需延迟调谐或主动同步。量子擦除的集成增强了时空和频域的带宽，为高达数十公里/秒的超快、连续速度检测铺平了道路。此次演示仅使用了之前水平的 14% 脉冲能量，使风探测范围达到 16 公里，标志着遥感能力的巨大飞跃。

更新日期：2024-08-15

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