Impact of anisotropy on the interaction of an atom with a one-dimensional nano-grating

Abstract

We study the interaction of an atom with a one-dimensional nano-grating within the framework of macroscopic QED, with special emphasis on possible anisotropic contributions. To this end, we first derive the scattering Green's tensor of the grating by means of a Rayleigh expansion and discuss its symmetry properties and asymptotes. We then determine the Casimir--Polder potential of an atom with the grating. In particular, we find that strong anisotropy can lead to a repulsive Casimir--Polder potential in the normal direction.

12 pages, 3 figures

References in corpus (5)

• Casimir interaction of dielectric gratings
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• Lateral Casimir force beyond the Proximity Force Approximation
• Modal Approach to Casimir Forces in Periodic Structures
• Casimir-Polder interaction between an atom and a dielectric grating

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