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arXiv 1010.0101quant-phphysics.atom-ph
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光子带隙光纤中冷原子的有效导引

Efficient Guiding of Cold Atoms though a Photonic Band Gap Fiber

S. Vorrath, S. A. Möller, P. Windpassinger, K. Bongs, K. Sengstock

摘要:

我们展示了第一次引导冷原子通过一个88毫米长的光子带隙光纤。导势是由在12 μ m空芯光纤内传播的远场共振偶极阱产生的。我们从暗斑85-Rb磁光阱加载光纤,并在1.5 m/s的速度下观察到超过10^5原子/s的峰值通量。与一个额外的水库光学偶极陷阱,一个恒定的原子通量为1.5 - 10^4原子/秒持续超过150\,ms。这些结果开辟了有趣的可能性,研究非线性光-物质相互作用在一个近一维的几何形状,并铺平了道路,引导物质波干涉。

英文摘要:

We demonstrate the first guiding of cold atoms through a 88 mm long piece of photonic band gap fiber. The guiding potential is created by a far-off resonance dipole trap propagating inside the fiber with a hollow core of 12 mu m. We load the fiber from a dark spot 85-Rb magneto optical trap and observe a peak flux of more than 10^5 atoms/s at a velocity of 1.5 m/s. With an additional reservoir optical dipole trap, a constant atomic flux of 1.5 10^4 atoms/s is sustained for more than 150\,ms. These results open up interesting possibilities to study nonlinear light-matter interaction in a nearly one-dimensional geometry and pave the way for guided matter wave interferometry.

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