标题： 采样光的空间相干性 显示英文标题

标题： Sampling the spatial coherence of light

摘要： 我们引入了哈特曼传感器的一种新应用，该传感器传统上用于波前传感，现在用于测量光信号的相干特性。 通过将相干矩阵与量子系统的密度矩阵进行类比，我们将传感器操作重新表述为一个量子估计问题。 我们在不同孔径的信号显著重叠的范围内实验验证了其有效性，从而实现了超越标准波前传感能力的信息提取。 显示英文摘要

摘要： We introduce a novel application of the Hartmann sensor, traditionally designed for wavefront sensing, to measure the coherence properties of optical signals. By drawing an analogy between the coherence matrix and the density matrix of a quantum system, we recast the sensor operation as a quantum estimation problem. We experimentally demonstrate its effectiveness in the regime where signals from different apertures significantly overlap, enabling information extraction beyond the reach of standard wavefront sensing.