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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机译：我们证明了围绕“体育场”形磁环的双向传播超过10 7个原子（87 Rb），该磁场包围着10.9 cm 2的面积，磁通密度超过10 11个原子sec -1 cm -2。原子从“体育场”一侧的2D + MOT加载到导轨中。施加光驻波脉冲以增加原子沿波导的传播速度。当完整旋转一圈后，原始原子云的原子部分在其初始位置重新结合时，原子样本将在200毫秒内充满整个环。我们讨论了将该结果扩展到原子环干涉仪的可能性。
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