标题： 偶极子俘获原子系综与环形腔的强耦合 显示英文标题

标题： Strong coupling of dipole trapped atomic ensembles to a ring cavity

摘要： 利用原子在共振光学腔中的腔量子电动力学系统是许多应用的核心元素，例如量子网络和量子增强传感。 我们提出了一种新颖的实验装置，实现了三角形环形谐振器的一个共振模式与一个由光学偶极子陷阱中超冷原子组成的集合之间的强空间模匹配。 我们通过腔内功率增强效应，将一束中等功率的激光锁定到腔的共振模式，从而实现了一个大体积、0.5 mK深度的腔辅助光学偶极子陷阱，允许从磁光陷阱高效加载该陷阱。 我们通过弱探测光束在与腔共振附近的透射谱的真空拉比分裂观察到原子的偶极子捕获，这表明在关闭磁光陷阱后，原子集合与腔之间实现了集体强耦合。 这项工作为腔辅助量子传感磁性和电场提供了一个高度适用的平台。 显示英文摘要

摘要： Cavity quantum electrodynamics systems using atoms in resonant optical cavities are central elements of many applications such as quantum networks and quantum-enhanced sensing. We present a novel experimental setup that achieves strong spatial mode-matching between a resonant mode of a triangular ring resonator and an ensemble of ultracold atoms trapped in an optical dipole trap. We realise a large-volume, 0.5\,mK deep cavity-assisted optical dipole trap from a laser beam of modest power locked to a resonant mode of the cavity through the intracavity power build-up effect, allowing efficient loading of the trap from a magneto-optical trap. We observe dipole trapping of atoms through the vacuum Rabi splitting of the transmission spectrum of a weak probe beam near resonant with the cavity, which demonstrates collective strong coupling of the ensemble of atoms to the cavity after the magneto-optical trap is turned off. The work paves the way for a highly suitable platform for cavity-assisted quantum sensing of magnetic and electric fields.