标题： 基于位置相关双光子波前传感的量子自适应成像 显示英文标题

标题： Quantum adaptive imaging by position-correlated biphoton wavefront sensing

摘要： 利用空间纠缠光子的量子成像具有增强的空间分辨率、抗噪鲁棒性以及反直觉现象等优势。 在量子自适应光学中，若能到达波前畸变源，则可使用经典光束检测畸变源，或者扫描纠缠光子对上的校正相位；若无法到达源，则已实现了双光子波前像差校正。 本文介绍了一种位置关联双光子Shack-Hartmann波前传感方法，该方法通过微透镜阵列焦平面处双光子位置质心分布重构强位置关联光子对上所加相位图案。 我们通过在塑料薄膜干扰下进行相位测量和自适应成像，实验验证了此方法。我们的方法仅需一步测量，因此是一种更直接的双光子相位测量方式，效率大幅提升，适合集成到量子显微术和通信中。 显示英文摘要

摘要： Quantum imaging with spatially entangled photons offers advantages such as enhanced spatial resolution, robustness against noise, and counter-intuitive phenomena. In quantum adaptive optics, biphoton aberration correction has been achieved by using classical beams to detect the aberration source or scanning the correction phase on biphotons if the source is unreachable. Here, we introduce position-correlated biphoton Shack-Hartmann wavefront sensing, where the phase pattern added on photon pairs with a strong position correlation is reconstructed from their position centroid distribution at the focal plane of a microlens array. We experimentally demonstrate this method by performing phase measurement and adaptive imaging against the disturbance of a plastic film. Our method involves only one measurement step, so it is a more direct approach to biphoton phase measurement with a greatly improved efficiency, suitable for integration into quantum microscopy and communication.