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arXiv 1401.7771quant-phcond-mat.quant-gas
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动力学局域和非局域Casimir原子相

Dynamical local and non-local Casimir atomic phases

François Impens, Claudio Ccapa Ttira, Ryan O. Behunin, Paulo A. Maia Neto

备注：
12 pages, 2 Figures. Final version accepted for publication in Phys. Rev. A
发表信息：
Phys. Rev. A 89 , 022516 (2014)
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摘要：

我们发展了一个开放系统动力学理论的Casimir相互作用的相干原子波和材料表面。系统-外部原子波-通过在原子干涉仪的不同路径上留下足迹，以非局部方式干扰环境-电磁场和原子偶极自由度。这导致了一个非本地的动力学相位同时依赖于两个不同的路径，超出了通常的原子光学方法，和本地动力学相位校正。因此，非局域和局域原子相位相干性对于捕捉外部原子运动和Casimir相互作用之间的相互作用同样重要。这样的动力学相位得到有限宽度波包通过开发一个图形扩展的扰动环境量子态。

英文摘要：

We develop an open-system dynamical theory of the Casimir interaction between coherent atomic waves and a material surface. The system --- the external atomic waves --- disturbs the environment --- the electromagnetic field and the atomic dipole degrees of freedom --- in a non- local manner by leaving footprints on distinct paths of the atom interferometer. This induces a non-local dynamical phase depending simultaneously on two distinct paths, beyond usual atom-optics methods, and comparable to the local dynamical phase corrections. Non-local and local atomic phase coherences are thus equally important to capture the interplay between the external atomic motion and the Casimir interaction. Such dynamical phases are obtained for finite-width wavepackets by developing a diagrammatic expansion of the disturbed environment quantum state.

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