Related papers: Enhanced decoherence for a neutral particle sliding on a metallic surface in vacuum

Enhanced decoherence for a neutral particle sliding on a metallic surface in vacuum

URL: http://arxiv.org/abs/2011.03485v3
Date: Mon, 15 Mar 2021 22:29:17 GMT
Title: Enhanced decoherence for a neutral particle sliding on a metallic surface in vacuum
Authors: Ludmila Viotti and Fernando C. Lombardo and Paula I. Villar
Abstract summary: We show that non-contact friction enhances the decoherence of the moving atom. We suggest that measuring decoherence times through velocity dependence of coherences could indirectly demonstrate the existence of quantum friction.
Score: 68.8204255655161
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Bodies in relative motion, spatially separated in vacuum, experience a tiny friction force known as quantum friction. This force has eluded experimental detection so far due to its small magnitude and short range. Herein, we give quantitative details so as to track traces of the quantum friction by measuring coherences in the atom. We notice that the environmentally induced decoherence can be decomposed into contributions of different signature: corrections induced by the electromagnetic vacuum in presence of the dielectric sheet and those induced by the motion of the particle. In this direction, we show that non-contact friction enhances the decoherence of the moving atom. Further, its effect can be enlarged by a thorough selection of the two-level particle and the Drude-Lorentz parameters of the material. In this context, we suggest that measuring decoherence times through velocity dependence of coherences could indirectly demonstrate the existence of quantum friction.

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