量子诱导的连贯性光检测和距离测量
Gewei Qian1, Xingqi Xu1, Shun-An Zhu1
1Interdisciplinary Center for Quantum Information, State Key Laboratory of Modern Optical Instrumentation, and Zhejiang Province Key Laboratory of Quantum Technology and Device, School of Physics, Zhejiang University, Hangzhou 310027, Zhejiang Province, China.
Physical review letters
|August 4, 2023
概括
量子诱导相干 (QuIC) LiDAR提供了对噪声的固有免疫力,克服了传统量子LiDAR的局限性. 这种新的方法使用纠的光子进行精确的距离测量,不受背景或阻塞光的影响.
科学领域:
- 量子光学就是一个量子光学.
- 量子传感是一种量子感应.
- 激光雷达技术 (LiDAR) 是一种技术.
背景情况:
- 传统的量子LiDAR (光检测和距离) 提高了信号噪声比 (SNR),但受到探测器定时动和干扰噪声的限制.
- 在传统的LiDAR中直接检测反射光子会降低SNR,增加背景噪声.
研究的目的:
- 设计,建造和验证一个量子诱导相干 (QuIC) LiDAR系统.
- 在量子LiDAR系统中证明噪声免疫力,克服现有方法的局限性.
主要方法:
- 使用来自Zou-Wang-Mandel实验的原则.
- 实施一个QuIC LiDAR系统,检测纠的参考光子,而不是反射的探针光子.
- 使用参考光子的单光子干扰边框来测距离.
- 使用反射探头光子来删除参考光子的路径信息.
主要成果:
- 该QuIC LiDAR系统证明了对环境和干扰噪音的固有免疫力.
- 伴随反射探头光的噪声对检测到的信号没有影响.
- 使用LED和激光光源来模拟背景和干扰噪声,验证了噪声弹性.
结论:
- 该QuIC LiDAR方法提供了一种新的方法来对抗噪声在精确的量子电磁传感和距离.
- 这种技术提高了LiDAR系统对环境和故意干扰的稳定性.
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