论文标题
量子和非本地效应可提供超过40dB优势的激光雷达
Quantum and Non-local Effects Offer LiDAR over 40dB Advantage
论文作者
论文摘要
非本地效应有可能从根本上推动量子增强的激光雷达，不仅在实验室环境中，而且在实践实施中提供了比经典激光雷达的优势。在这项工作中，我们使用基于时频纠缠的量子增强的激光雷达（与经典的相位不敏感的激光雷达系统相比，使用量子增强的激光雷达）证明了43dB较低的信噪比。在检测器饱和之前，我们的系统可以比经典的单晶体计数激光剂系统耐受3个数量级以上的噪声。为了实现这些优势，我们使用非本地分散取消，尽管较大的检测器时间不确定性较大，但仍具有光子对中的强时间相关性。我们继续将该方案与专门构建的扫描收集光学元件合并，以在具有噪声的环境中对非反射目标进行图像。
Non-local effects have the potential to radically move forward quantum enhanced LiDAR to provide an advantage over classical LiDAR not only in laboratory environments but practical implementation. In this work, we demonstrate a 43dB lower signal-to-noise ratio using a quantum enhanced LiDAR based on time-frequency entanglement compared with a classical phase-insensitive LiDAR system. Our system can tolerate more than 3 orders of magnitude higher noise than classical singlephoton counting LiDAR systems before detector saturation. To achieve these advantages, we use non-local cancellation of dispersion to take advantage of the strong temporal correlations in photon pairs in spite of the orders of magnitude larger detector temporal uncertainty. We go on to incorporate this scheme with purpose-built scanning collection optics to image non-reflecting targets in an environment with noise.
