Entangled states dynamics of moving two-level atoms in a thermal field bath

• URL: http://arxiv.org/abs/2303.10618v3
• Date: Fri, 21 Jun 2024 06:00:47 GMT
• Title: Entangled states dynamics of moving two-level atoms in a thermal field bath
• Authors: Nikolaos Papadatos, Dimitris Moustos,
• Abstract summary: We study the dynamics of entanglement between the moving atom and a qubit at rest and isolated from the thermal field. We find that in the case of the standard Unruh-DeWitt coupling and for high temperatures of the environment the decay of entanglement is delayed due to the atom's motion.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We consider a two-level atom that follows a wordline of constant velocity, while interacting with a massless scalar field in a thermal state through: (i) an Unruh-DeWitt coupling, and (ii) a coupling that involves the time derivative of the field. We treat the atom as an open quantum system, with the field playing the role of the environment, and employ a master equation to describe its time evolution. We study the dynamics of entanglement between the moving atom and a (auxiliary) qubit at rest and isolated from the thermal field. We find that in the case of the standard Unruh-DeWitt coupling and for high temperatures of the environment the decay of entanglement is delayed due to the atom's motion. Instead, in the derivative coupling case, the atom's motion always causes the rapid death of entanglement.

Related papers

• Single and entangled atomic systems in thermal bath and the Fulling-Davies-Unruh effect [0.10713888959520207]
  We revisit the Fulling-Davies-Unruh effect in the context of two-level single and entangled atomic systems that are static in a thermal bath.
  arXiv  Detail & Related papers  (2024-01-25T14:19:28Z)
• A dynamic theory of entanglement for uniformly accelerated atoms [0.0]
  We study the entanglement dynamics of accelerated atoms using the theory of open quantum systems. The fundamental role played by proper acceleration in the entanglement harvesting and sudden death phenomenon is discussed.
  arXiv  Detail & Related papers  (2023-12-26T21:44:25Z)
• Entanglement entropy in conformal quantum mechanics [68.8204255655161]
  We consider sets of states in conformal quantum mechanics associated to generators of time evolution whose orbits cover different regions of the time domain. States labelled by a continuous global time variable define the two-point correlation functions of the theory seen as a one-dimensional conformal field theory.
  arXiv  Detail & Related papers  (2023-06-21T14:21:23Z)
• Dynamical atom-wall Casimir-Polder effect after a sudden change of the atomic position [0.0]
  We investigate the time-dependent atom-plate Casimir-Polder force between an atom and a conducting wall. We find that the dynamical atom-plate Casimir-Polder interaction exhibits oscillation in time, and can be attractive or repulsive depending on time and the atom-wall distance.
  arXiv  Detail & Related papers  (2023-04-13T11:45:02Z)
• Bound state of distant photons in waveguide quantum electrodynamics [137.6408511310322]
  Quantum correlations between distant particles remain enigmatic since the birth of quantum mechanics. We predict a novel kind of bound quantum state in the simplest one-dimensional setup of two interacting particles in a box. Such states could be realized in the waveguide quantum electrodynamics platform.
  arXiv  Detail & Related papers  (2023-03-17T09:27:02Z)
• Uniformly accelerated Brownian oscillator in (2+1)D: temperature-dependent dissipation and frequency shift [0.0]
  We consider an Unruh-DeWitt detector coupled to a quantum scalar field in the (2+1)-dimensional Minkowski spacetime. We find that both the accelerated detector's dissipation rate and the shift of its frequency caused by the coupling to the field bath depend on the acceleration temperature.
  arXiv  Detail & Related papers  (2022-01-20T16:45:38Z)
• Motion-induced radiation due to an atom in the presence of a graphene plane [62.997667081978825]
  We study the motion-induced radiation due to the non-relativistic motion of an atom in the presence of a static graphene plate. We show that the effect of the plate is to increase the probability of emission when the atom is near the plate and oscillates along a direction perpendicular to it.
  arXiv  Detail & Related papers  (2021-04-15T14:15:23Z)
• Quantum chaos driven by long-range waveguide-mediated interactions [125.99533416395765]
  We study theoretically quantum states of a pair of photons interacting with a finite periodic array of two-level atoms in a waveguide. Our calculation reveals two-polariton eigenstates that have a highly irregular wave-function in real space.
  arXiv  Detail & Related papers  (2020-11-24T07:06:36Z)
• Collective spontaneous emission of two entangled atoms near an oscillating mirror [50.591267188664666]
  We consider the cooperative spontaneous emission of a system of two identical atoms, interacting with the electromagnetic field in the vacuum state. Using time-dependent theory, we investigate the spectrum of the radiation emitted by the two-atom system. We show that it is modulated in time, and that the presence of the oscillating mirror can enhance or inhibit the decay rate.
  arXiv  Detail & Related papers  (2020-10-07T06:48:20Z)
• Retarded resonance Casimir-Polder interaction of a uniformly rotating two-atom system [0.0]
  We calculate the second-order energy shift of the entangled states in the presence of two kinds of fields. A unique retarded response is also noticed in comparison to the free massless case.
  arXiv  Detail & Related papers  (2020-08-30T14:31:59Z)
• Analog cosmological reheating in an ultracold Bose gas [58.720142291102135]
  We quantum-simulate the reheating-like dynamics of a generic cosmological single-field model in an ultracold Bose gas. Expanding spacetime as well as the background oscillating inflaton field are mimicked in the non-relativistic limit. The proposed experiment has the potential of exploring the evolution up to late times even beyond the weak coupling regime.
  arXiv  Detail & Related papers  (2020-08-05T18:00:26Z)

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

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.