一种使用发散激光束的稳健且模块化的铯磁光阱
A robust and modular cesium magneto-optical trap using diverging laser beams
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中文总结 AI 辅助
该研究展示用于惯性量子传感等应用的优化磁光阱，通过发散冷却激光束和模块化光学元件设计实现稳定运行，经偏振梯度冷却产生低温原子样本，还在非传统几何结构中实现原子捕获。
中文摘要 AI 辅助
磁光阱（MOTs）是用于中性原子量子传感、模拟和计算的主力技术。在此，我们展示了一种针对惯性量子传感和精密计量应用优化的MOT。我们的MOT在一个稳健的模块化系统中捕获\(4\times10^8\)个铯（Cs）原子，该系统通过两个设计特点实现稳定运行：一是使用发散冷却激光束减少不必要反射；二是光学元件安装在与真空腔刚性连接的光纤耦合、紧凑且模块化的笼子里。经过偏振梯度冷却（PGC）后，系统产生温度低于10\({\mu}\)K的原子样本，与使用准直激光束的传统MOT相当。此外，我们在一种非传统MOT几何结构中观察到捕获了\(2\times10^7\)个Cs原子，其中冷却激光束与四极磁场主轴呈对角线。
英文摘要
Magneto-optical traps (MOTs) are a workhorse technology for neutral-atom quantum sensing, simulation, and computing. Here, we demonstrate a MOT optimized for inertial quantum sensing and precision metrology applications. Our MOT traps $4\times10^8$ cesium (Cs) atoms in a robust, modular system that achieves stable operation through two design features: (1) we use diverging cooling laser beams to reduce unwanted reflections and (2) optical elements are mounted in a fiber-coupled, compact, and modular cage rigidly attached to the vacuum chamber. Following polarization-gradient cooling (PGC), the system produces atom samples with temperatures below 10 $μ$K, similar to those achieved in conventional MOTs that use collimated laser beams. In addition, we observe trapping of $2\times10^7$ Cs atoms in a non-conventional MOT geometry, where the cooling laser beams are diagonal to the principal axis of the quadrupole magnetic field.
