在亚毫米膜孔中演示MOT
Demonstration of a MOT in a Sub-Millimeter Membrane Hole
摘要：
我们演示了在透明膜中的亚毫米直径孔内冷原子系综的产生，即所谓的“膜MOT”。通过亚多普勒冷却过程，被膜MOT捕获的原子被冷却到10 uK。非桥/桥膜孔内的原子数约为10^4 ~ 10^5，对于400 μ m直径的膜孔，MOT云的1/e^2直径约为180 μ m。这样的膜器件在原理上可以有效地将冷原子加载到由悬浮膜波导产生的用于强原子-光相互作用的渐逝场光阱中，并且在波导处提供足够的散热能力。这是迈向光子原子阱集成平台（ATIP）的关键一步。
英文摘要：
We demonstrate the generation of a cold-atom ensemble within a sub-millimeter diameter hole in a transparent membrane, a so-called "membrane MOT". With a sub-Doppler cooling process, the atoms trapped by the membrane MOT are cooled down to 10 uK. The atom number inside the unbridged/bridged membrane hole is about 10^4 to 10^5, and the 1/e^2-diameter of the MOT cloud is about 180 um for a 400 um-diameter membrane hole. Such a membrane device can, in principle, efficiently load cold atoms into the evanescent-field optical trap generated by the suspended membrane waveguide for strong atom-light interaction and provide the capability of sufficient heat dissipation at the waveguide. This represents a key step toward the photonic atom trap integrated platform (ATIP).
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