Probing atom-surface interactions by diffraction of Bose-Einstein condensates

Abstract

In this article we analyze the Casimir-Polder interaction of atoms with a solid grating and an additional repulsive interaction between the atoms and the grating in the presence of an external laser source. The combined potential landscape above the solid body is probed locally by diffraction of Bose-Einstein condensates. Measured diffraction efficiencies reveal information about the shape of the Casimir-Polder interaction and allow us to discern between models based on a pairwise-summation (Hamaker) approach and Lifshitz theory.

5 pages, 4 figures

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• Fundamental limits to attractive and repulsive Casimir--Polder forces
• Heating in Nanophotonic Traps for Cold Atoms
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• Lateral Casimir-Polder forces by breaking time-reversal symmetry
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• Nonequilibrium atom-surface interaction with lossy multi-layer structures
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• Robust spatial coherence 5$\mu$m from a room-temperature atom chip
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• Casimir-Polder interaction with Chern-Simons boundary layers
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