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arXiv · 2408.15433

Decoherence and Brownian motion of a polarizable particle near a surface

Clemens Jakubec·Christopher Jarzynski·Kanu Sinha
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Abstract

We analyze the classical and quantized center-of-mass motion of a polarizable particle interacting with the fluctuations of the electromagnetic (EM) field in the presence of a medium. As a polarizable particle is immersed in a thermal environment, the momentum impulses imparted by the field fluctuations lead to momentum diffusion and drag for the particle's classical center of mass. When considering the quantized center-of-mass motion of the particle, these very fluctuations gain information about its position, leading to decoherence in the position basis. We derive a position localization master equation for the particle's quantized center of mass, and examine its classical center-of-mass momentum diffusion, elucidating correspondences between classical and quantum Brownian motion of polarizable particles near media.

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Clemens Jakubec, Christopher Jarzynski, Kanu Sinha. 2024-08-27. Decoherence and Brownian motion of a polarizable particle near a surface. https://arxiv.org/abs/2408.15433

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