超冷$^{133}$Cs和$^{87}$Rb原子的长距离光学传送带输运
Long distance optical conveyor-belt transport of ultracold $^{133}$Cs and $^{87}$Rb atoms
AI总结：
本文利用双高斯光束构成的光学传送带，在25毫秒内将超冷铯和铷原子输运37.2厘米，效率高达75%，并成功制备玻色-爱因斯坦凝聚体，验证了其在量子气体显微镜实验中的适用性。
摘要：
我们报告了利用由两束频率差可控的相对传播光束形成的光学传送带，在不到$25\,$ms的时间内将超冷铯和铷原子输运超过$37.2\,$cm。通过仔细选择束腰和焦点位置，我们能够使用两个静态高斯光束进行输运，从而避免了贝塞尔光束或变焦透镜的需要。我们表征了两种原子的输运效率，包括不同输运轨迹的比较，深入了解了损失机制，并发现最小加加速度轨迹是最优的。使用优化参数，我们能够输运多达$7 \ imes 10^6$个铯或铷原子，效率高达$75\,$%。为了证明我们的输运方案在量子气体显微镜实验中的可行性，我们在输运后制备了任一种原子的玻色-爱因斯坦凝聚体，并展示了同时输运两种原子的测量结果。
英文摘要：
We report on the transport of ultracold cesium and rubidium atoms over $37.2\,$cm in under $25\,$ms using an optical conveyor belt formed by two counter-propagating beams with a controllable frequency difference that generate a movable optical lattice. By carefully selecting the waists and focus positions, we are able to use two static Gaussian beams for the transport, avoiding the need for a Bessel beam or vari-focus lenses. We characterize the transport efficiency for both species, including a comparison of different transport trajectories, gaining insight into the loss mechanisms and finding the minimum jerk trajectory to be optimum. Using the optimized parameters, we are able to transport up to $7 \times 10^6$ cesium or rubidium atoms with an efficiency up to $75\,$%. To demonstrate the viability of our transport scheme for experiments employing quantum gas microscopy, we produce Bose-Einstein condensates of either species after transport and present measurements of the simultaneous transport of both species.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
