标题： 基于离子的腔光子数无损传感器 显示英文标题

标题： Ion-based nondestructive sensor for cavity photon numbers

摘要： 我们将一个被束缚的离子色散耦合到一个光学腔，以非破坏性方式提取关于腔光子数分布的信息。 离子经历的与光子数相关的AC-Stark位移通过Ramsey光谱学进行测量。 我们首先利用这些测量来获得离子-腔相互作用强度。 接下来，我们对相干态和具有混合热-相干统计特性的状态重构腔光子数分布，发现与校准状态的重叠度超过99%。 显示英文摘要

摘要： We dispersively couple a single trapped ion to an optical cavity to extract information about the cavity photon-number distribution in a nondestructive way. The photon-number-dependent AC-Stark shift experienced by the ion is measured via Ramsey spectroscopy. We use these measurements first to obtain the ion-cavity interaction strength. Next, we reconstruct the cavity photon-number distribution for coherent states and for a state with mixed thermal-coherent statistics, finding overlaps above 99% with the calibrated states.