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arXiv 2007.11307physics.atom-ph
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陷阱对称性和原子间相互作用对带内态标记的囚禁原子干涉仪的影响

Effect of trap symmetry and atom-atom interactions on a trapped atom interferometer with internal state labelling

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

摘要:

本文研究了存在相互作用时具有内态标记的囚禁原子干涉仪的动力学。我们考虑两种情况:其中内部状态保持叠加的原子钟,以及其中内部状态分离的惯性传感器配置。由平均自旋演化,我们推导出条纹衬度和相移。在时钟配置中,我们恢复了众所周知的相同自旋旋转效应(ISRE),它可以显着增加自旋相干时间。我们还发现,这种效应的大小取决于陷阱的几何形状,这与我们最近在时钟配置中的实验结果是一致的[M. Dupont-Nivet等人新物理杂志,20,043051(2018)],其中未观察到ISRE。在惯性传感器的情况下,我们表明,尽管空间分离,它仍然是可能的,以增加相干时间,通过使用平均场的相互作用,以抵消不对称的捕获潜力。

英文摘要:

In this paper, we study the dynamics of a trapped atom interferometer with internal state labelling in the presence of interactions. We consider two situations: an atomic clock in which the internal states remain superposed, and an inertial sensor configuration in which they are separated. From the average spin evolution, we deduce the fringe contrast and the phase-shift. In the clock configuration, we recover the well-known identical spin rotation effect (ISRE) which can significantly increase the spin coherence time. We also find that the magnitude of the effect depends on the trap geometry in a way that is consistent with our recent experimental results in a clock configuration [M. Dupont-Nivet, and al., New J. Phys., 20, 043051 (2018)], where ISRE was not observed. In the case of an inertial sensor, we show that despite the spatial separation it is still possible to increase the coherence time by using mean field interactions to counteract asymmetries of the trapping potential.

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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