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arXiv physics/0001015physics.atom-ph
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利用原子干涉探测原子-表面相互作用

Using atomic interference to probe atom-surface interaction

R. Marani, L. Cognet, V. Savalli, N. Westbrook, C. I. Westbrook, A. Aspect

摘要:

我们表明,原子干涉反射从两个适当的偏振倏逝波是敏感的延迟效应在原子表面相互作用的特定的实验参数。研究了原子德布罗意波长的长短极限。前一种情况在半经典近似下(Landau-Zener模型)进行了分析。后者代表了一个量子制度,并通过数值求解相关的耦合薛定谔方程进行分析。我们考虑一个具体的实验方案,并显示铷(短波长)和更轻的亚稳态氦原子(长波长)的结果。然后讨论每个案件的是非曲直。

英文摘要:

We show that atomic interference in the reflection from two suitably polarized evanescent waves is sensitive to retardation effects in the atom-surface interaction for specific experimental parameters. We study the limit of short and long atomic de Broglie wavelength. The former case is analyzed in the semiclassical approximation (Landau-Zener model). The latter represents a quantum regime and is analyzed by solving numerically the associated coupled Schroedinger equations. We consider a specific experimental scheme and show the results for rubidium (short wavelength) and the much lighter meta-stable helium atom (long wavelength). The merits of each case are then discussed.

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