冷原子在“体育场”形磁波导中的双向传输
Bidirectional propagation of cold atoms in a "stadium" shaped magnetic guide
摘要：
我们证明了107个原子（87 Rb）围绕一个“体育场”形的磁环，包围面积为10.9厘米2，与超过1011原子秒-1厘米-2的通量密度的双向传播。原子从“体育场”一侧的2D + MOT加载到指南中。施加光学驻波脉冲以增加原子沿波导的传播速度。当原始原子云的反向传播原子部分在完整旋转后在其初始位置重新组合时，原子样品在200 ms内填充整个环。我们讨论了一个可能的推广这一结果的引导原子环干涉仪。
英文摘要：
We demonstrate the bi-directional propagation of more than 10 7 atoms (87 Rb) around a "stadium" shaped magnetic ring that encloses an area of 10.9 cm 2, with a flux density exceeding 10 11 atoms sec -1 cm -2 . Atoms are loaded into the guide from a 2D + MOT at one side of the "stadium". An optical standing wave pulse is applied to increase the propagation velocity of atoms along the waveguide. The atom sample fills the entire ring in 200 ms when counterpropagating atom sections of the original atom cloud recombine at their initial positions after a full revolution. We discuss a possible extension of this result to a guided atom ring interferometer.
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