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arXiv · 0902.3235

Dispersive interactions between atoms and non planar surfaces

Riccardo Messina·Diego A. R. Dalvit·Paulo A. Maia Neto·Astrid Lambrecht·Serge Reynaud
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Abstract

We calculate the dispersive force between a ground state atom and a non planar surface. We present explicit results for a corrugated surface, derived from the scattering approach at first order in the corrugation amplitude. A variety of analytical results are derived in different limiting cases, including the van der Waals and Casimir-Polder regimes. We compute numerically the exact first-order dispersive potential for arbitrary separation distances and corrugation wavelengths, for a Rubidium atom on top of a silicon or gold corrugated surface. We discuss in detail the inadequacy of the proximity force approximation, and present a simple but adequate approximation for computing the potential.

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Riccardo Messina, Diego A. R. Dalvit, Paulo A. Maia Neto, Astrid Lambrecht, Serge Reynaud. 2009-02-18. Dispersive interactions between atoms and non planar surfaces. https://doi.org/10.1103/physreva.80.022119

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