Related papers: Decoherence due to Casimir effect?

Decoherence due to Casimir effect?

URL: http://arxiv.org/abs/2409.03866v2
Date: Fri, 13 Sep 2024 15:28:40 GMT
Title: Decoherence due to Casimir effect?
Authors: Anirudh Gundhi,
Abstract summary: In this work it is shown that the off-diagonal elements of the reduced density matrix of the electron are suppressed due to the sudden switching on of the interaction with the environment. It can only originate from emission of bremsstrahlung by the electron, due to the acceleration caused by the effective Coulomb potential of all the infinite image charges.
Score: 0.0
License: http://creativecommons.org/licenses/by/4.0/
Abstract: Open system dynamics of an electron is studied in the presence of radiation field, confined between two parallel conducting pates. It has been suggested in previous works that the quantized zero-point modes of this field lead to finite decoherence effects, possibly due to the Casimir force. However, in this work it is shown that the off-diagonal elements of the reduced density matrix of the electron are suppressed due to the sudden switching on of the interaction with the environment, and would not be observationally relevant in typical scenarios. The work clarifies important theoretical aspects of the setup and argues that any irreversible loss of coherence, in general, should not be ascribed to vacuum fluctuations. It can only originate from emission of bremsstrahlung by the electron, due to the acceleration caused by the effective Coulomb potential of all the infinite image charges.

Related papers

The Casimir effect at the nucleus [0.0]
This report presents a modification for the potential of electrons near the nucleus by investigating the impact of the Casimir effect on the innermost electrons. It can be shown that with this approach the calculated binding energies agree much better with the values from spectroscopy, especially for heavy elements.
arXiv Detail & Related papers (2024-02-01T14:57:24Z)
Optically induced delocalization of electrons bound by attractive potentials [0.0]
A circularly polarized off-resonant electromagnetic field can destroy the electron states bound by three-dimensional attractive potentials. As a consequence, the optically induced delocalization of bound electrons appears.
arXiv Detail & Related papers (2023-08-14T14:51:42Z)
Vacuum-field-induced state mixing [0.49157446832511503]
We show a surprising decrease of decay rates within a considerable range of atom-nanoparticle separations. Our work opens new quantum state manipulation possibilities in emitters with closely spaced energy levels.
arXiv Detail & Related papers (2022-12-22T11:14:08Z)
Can we observe non-perturbative vacuum shifts in cavity QED? [0.0]
We show that confinement per se is not enough to result in substantial vacuum-induced corrections. The presence of high-impedance modes, such as plasmons or engineered LC resonances, can drastically increase these effects. It is at least in principle possible to access a regime where light-matter interactions become non-perturbative.
arXiv Detail & Related papers (2022-12-16T19:00:15Z)
Quantum interaction of sub-relativistic aloof electrons with mesoscopic samples [91.3755431537592]
Relativistic electrons experience very slight wave packet distortion and negligible momentum recoil when interacting with nanometer-sized samples. Modelling fast electrons as classical point-charges provides extremely accurate theoretical predictions of energy-loss spectra.
arXiv Detail & Related papers (2022-11-14T15:22:37Z)
Quantum electron transport controlled by cavity vacuum fields [0.0]
We study theoretically how the coupling to cavity vacuum fields affects the electron transport in quantum conductors. We show how the cavity vacuum fields can lead to both large enhancement or suppression of electron conductance in the ballistic regime.
arXiv Detail & Related papers (2022-06-27T16:27:16Z)
The quantum Otto cycle in a superconducting cavity in the non-adiabatic regime [62.997667081978825]
We analyze the efficiency of the quantum Otto cycle applied to a superconducting cavity. It is shown that, in a non-adiabatic regime, the efficiency of the quantum cycle is affected by the dynamical Casimir effect.
arXiv Detail & Related papers (2021-11-30T11:47:33Z)
Photon-mediated interactions near a Dirac photonic crystal slab [68.8204255655161]
We develop a theory of dipole radiation near photonic Dirac points in realistic structures. We find positions where the nature of the collective interactions change from being coherent to dissipative ones. Our results significantly improve the knowledge of Dirac light-matter interfaces.
arXiv Detail & Related papers (2021-07-01T14:21:49Z)
Enhanced decoherence for a neutral particle sliding on a metallic surface in vacuum [68.8204255655161]
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.
arXiv Detail & Related papers (2020-11-06T17:34:35Z)
General quantum-mechanical solution for twisted electrons in a uniform magnetic field [68.8204255655161]
A theory of twisted (and other structured) paraxial electrons in a uniform magnetic field is developed. The observable effect of a different behavior of relativistic Laguerre-Gauss beams with opposite directions of the orbital angular momentum penetrating from the free space into a magnetic field is predicted.
arXiv Detail & Related papers (2020-05-13T16:35:10Z)
Quantum decoherence by Coulomb interaction [58.720142291102135]
We present an experimental study of the Coulomb-induced decoherence of free electrons in a superposition state in a biprism electron interferometer close to a semiconducting and metallic surface. The results will enable the determination and minimization of specific decoherence channels in the design of novel quantum instruments.
arXiv Detail & Related papers (2020-01-17T04:11:44Z)

This list is automatically generated from the titles and abstracts of the papers in this site.