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arXiv quant-ph/0511256quant-ph
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原子云中长程序的建立和探测

Creating and probing long-range order in atomic clouds

C. von Cube, S. Slama, M. Kohler, C. Zimmermann, Ph. W. Courteille

摘要:

超冷原子与高Q光学环形腔中的光模相互作用可以使它们的运动同步。这种集体行为使得该系统在量子计算应用中非常有趣。本文致力于集体耦合的研究。我们报告的集体动力学的第一次观察和实现的激光器,其增益机制是基于集体原子反冲。我们表明,如果原子受到摩擦力,从无序分布开始,它们自发地形成一个移动的密度光栅。此外,我们证明了一维原子密度光栅可以通过布拉格散射探测。通过外差的布拉格反射光与参考光束,我们得到详细的信息引起的布拉格散射过程中的相移。

英文摘要:

Ultracold atoms interacting with the optical modes of a high-Q optical ring cavity can synchronize their motion. The collective behavior makes the system interesting for quantum computing applications. This paper is devoted to the study of the collective coupling. We report on the first observation of a collective dynamics and on the realization of a laser, the gain mechanism of which is based on collective atomic recoil. We show that, if the atoms are subject to a friction force, starting from an unordered distribution they spontaneously form a moving density grating. Furthermore, we demonstrate that a 1D atomic density grating can be probed via Bragg scattering. By heterodyning the Bragg-reflected light with a reference beam, we obtain detailed information on phase shifts induced by the Bragg scattering process.

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。

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