Quantum fluctuations of the friction force induced by the dynamical Casimir emission

Butera, S. and Carusotto, I. (2019) Quantum fluctuations of the friction force induced by the dynamical Casimir emission. Europhysics Letters, 128(2), 24002. (doi: 10.1209/0295-5075/128/24002)

207568.pdf - Accepted Version



We study a quantum model of dynamical Casimir effect in an optical cavity enclosed by a freely moving mirror attached to a harmonic spring. The quantum fluctuations of the friction force exerted by the dynamical Casimir emission onto the moving mirror are investigated, as well as their consequences on the quantum state of the mirror oscillation. Observable signatures of the interplay of the nonlinear nature of the effective mirror-cavity coupling and of the discreteness of the emitted photons are pointed out, in particular as a fast diffusion of the mirror oscillation phase. These results are interpreted in the language of quantum field theories on curved space-times as a breakdown of the standard semiclassical theory of the backreaction.

Item Type:Articles
Additional Information:This work was supported by the Julian Schwinger foundation, Grant No. JSF-16-12-0001. IC acknowledges funding from Provincia Autonoma di Trento and from the Quantum Flagship Grant PhoQuS (820392) of the European Union.
Glasgow Author(s) Enlighten ID:Butera, Dr Salvatore
Authors: Butera, S., and Carusotto, I.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Europhysics Letters
Publisher:EDP Sciences
ISSN (Online):1286-4854
Published Online:03 January 2020
Copyright Holders:Copyright © 2020 EPLA
First Published:First published in Europhysics Letters 128(2):24002
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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