Decoherence and Brownian motion of a polarizable particle near a surface
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arXiv
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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866910580744388608 |
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| author | Jakubec, Clemens Jarzynski, Christopher Sinha, Kanu |
| author_facet | Jakubec, Clemens Jarzynski, Christopher Sinha, Kanu |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_15433 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Decoherence and Brownian motion of a polarizable particle near a surface Jakubec, Clemens Jarzynski, Christopher Sinha, Kanu Quantum Physics 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. |
| title | Decoherence and Brownian motion of a polarizable particle near a surface |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2408.15433 |