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Nonequilibrium atom-surface interaction with lossy multi-layer structures

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posted on 2023-11-30, 05:30 authored by Marty Oelschläger, Kurt Busch, Francesco Intravaia
The impact of lossy multi-layer structures on nonequilibrium atom-surface interactions is discussed. Specifically, the focus lies on a fully non-Markovian and nonequilibrium description of quantum friction, the fluctuation-induced drag force acting on an atom moving at constant velocity and height above the multi-layer structures. Compared to unstructured bulk material, the drag force for multi-layer systems is considerably enhanced and exhibits different regimes in its velocity and distance dependences. These features are linked to the appearance of coupled interface polaritons within the superlattice structures. Our results are not only useful for an experimental investigation of quantum friction but also highlight a way to tailor the interaction by simply modifying the structural composition of the multi-layer systems.

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