Dispersive interactions between atoms and non planar surfaces

Details Dispersive interactions between atoms and non planar surfaces Dispersive interactions between atoms and non planar surfaces

2009-02-18

arxiv.org/abs/0902.3235v2

Phys. Rev. A 80, 022119 (2009)

Physics

Quantum Physics

10 pages, 4 figures

Scientific paper

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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