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arXiv 1606.06008physics.atom-phquant-ph
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利用带内态标记的热系综囚禁原子干涉仪的对比度和相移

Contrast and phase-shift of a trapped atom interferometer using a thermal ensemble with internal state labelling

M. Dupont-Nivet, C. I. Westbrook, S. Schwartz

摘要:

本文报道了用内态标记法对双阱Ramsey干涉仪的理论研究。我们考虑使用冷原子的热系综而不是玻色-爱因斯坦凝聚体来最小化原子相互作用的影响。为了在这种情况下保持令人满意的相干性水平,干涉仪的两个臂之间需要高度对称。假设分裂和复合过程是绝热的,我们从理论上推导了这种干涉仪在重力场或加速度场存在下的相移和对比度。我们还考虑使用一个“捷径绝热”协议,以加快分裂过程,并讨论这样的程序如何影响相移和对比度。我们发现,这两个程序导致相同形式的相移。

英文摘要:

We report a theoretical study of a double-well Ramsey interferometer using internal state labelling. We consider the use of a thermal ensemble of cold atoms rather than a Bose-Einstein condensate to minimize the effects of atomic interactions. To maintain a satisfactory level of coherence in this case, a high degree of symmetry is required between the two arms of the interferometer. Assuming that the splitting and recombination processes are adiabatic, we theoretically derive the phase-shift and the contrast of such an interferometer in the presence of gravity or an acceleration field. We also consider using a "shortcut to adiabaticity" protocol to speed up the splitting process and discuss how such a procedure affects the phase shift and contrast. We find that the two procedures lead to phase-shifts of the same form.

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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