Quantum Brownian Motion of a particle from Casimir-Polder Interactions

Abstract

We study the fluctuation-induced dissipative dynamics of the quantized center of mass motion of a polarizable dielectric particle trapped near a surface. The particle's center of mass is treated as an open quantum system coupled to the electromagnetic field acting as its environment, with the resulting system dynamics described by a quantum Brownian motion master equation. The dissipation and decoherence of the particle's center of mass are characterized by the modified spectral density of the electromagnetic field that depends on surface losses and the strength of the classical trap field. Our results are relevant to experiments with levitated dielectric particles near surfaces, illustrating potential ways of mitigating fluctuation-induced decoherence while preparing such systems in macroscopic quantum states.

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Cited by in corpus (9)

• Dissipative dynamics of a particle coupled to field via internal degrees of freedom
• Fluctuation-induced Forces on Nanospheres in External Fields
• Decoherence due to the Casimir effect?
• Backaction suppression in levitated optomechanics using reflective boundaries
• Thermodynamic perspective on quantum fluctuations
• Steady-State Entanglement Generation via Casimir-Polder Interactions
• Casimir-Polder potential on an excited atom near an atomic array
• Over forty years of research towards the understanding of Quantum Brownian Motion -- the contributions of A. O. Caldeira
• Surface-induced decoherence and heating of charged particles