Decoherence as Detector of the Unruh Effect

• URL: http://arxiv.org/abs/2003.05014v1
• Date: Tue, 10 Mar 2020 21:45:09 GMT
• Title: Decoherence as Detector of the Unruh Effect
• Authors: Alexander I Nesterov, Gennady P Berman, Manuel A Rodr\'iguez Fern\'andez and Xidi Wang
• Abstract summary: We propose a new type of the Unruh-DeWitt detector which measures the decoherence of the reduced density matrix of the detector interacting with the massless quantum scalar field. We find that the decoherence decay rates are different in the inertial and accelerated reference frames.
• Score: 58.720142291102135
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We propose a new type of the Unruh-DeWitt detector which measures the decoherence of the reduced density matrix of the detector interacting with the massless quantum scalar field. We find that the decoherence decay rates are different in the inertial and accelerated reference frames. We show that the exponential phase decay can be observed for relatively low accelerations, that can significantly improve the conditions for measuring the Unruh effect.

Related papers

• Unruh detectors, Feynman diagrams, acceleration and decay [0.0]
  We show that when using the detector as a model for decay, its transition rate can be related directly to the decay rate obtained from QFT. This provides a straightforward method for calculating the decay rate of accelerated particles to first order in the coupling constants.
  arXiv  Detail & Related papers  (2025-01-20T14:47:20Z)
• A New Bite Into Dark Matter with the SNSPD-Based QROCODILE Experiment [55.46105000075592]
  We present the first results from the Quantum Resolution-d Cryogenic Observatory for Dark matter Incident at Low Energy (QROCODILE) The QROCODILE experiment uses a microwire-based superconducting nanowire single-photon detector (SNSPD) as a target and sensor for dark matter scattering and absorption. We report new world-leading constraints on the interactions of sub-MeV dark matter particles with masses as low as 30 keV.
  arXiv  Detail & Related papers  (2024-12-20T19:00:00Z)
• Influence of field mass and acceleration on entanglement generation [0.0]
  We find that the maximum entanglement between detectors does not exhibit a strict monotonic dependence on detector acceleration. Novelly, our findings indicate the absence of a strong anti-Unruh effect in (3+1)-dimensional massive scalar fields.
  arXiv  Detail & Related papers  (2024-11-05T10:54:01Z)
• Entanglement Harvesting of Inertially Moving Unruh-DeWitt Detectors in Minkowski Spacetime [0.0]
  We investigate the effects of relative motion on entanglement harvesting by considering a pair of Unruh-Dewitt detectors moving at arbitrary, but independent, velocities. We find that the Negativity is a function of the relative velocity of the detectors, as well as their energy gaps and minimal separation.
  arXiv  Detail & Related papers  (2022-05-29T19:09:05Z)
• Dynamics of Transmon Ionization [94.70553167084388]
  We numerically explore the dynamics of a driven transmon-resonator system under strong and nearly resonant measurement drives. We find clear signatures of transmon ionization where the qubit escapes out of its cosine potential.
  arXiv  Detail & Related papers  (2022-03-21T18:00:15Z)
• Quantum asymmetry and noisy multi-mode interferometry [55.41644538483948]
  Quantum asymmetry is a physical resource which coincides with the amount of coherence between the eigenspaces of a generator. We show that the asymmetry may emphincrease as a result of a emphdecrease of coherence inside a degenerate subspace.
  arXiv  Detail & Related papers  (2021-07-23T07:30:57Z)
• Intrinsic mechanisms for drive-dependent Purcell decay in superconducting quantum circuits [68.8204255655161]
  We find that in a wide range of settings, the cavity-qubit detuning controls whether a non-zero photonic population increases or decreases qubit decay Purcell. Our method combines insights from a Keldysh treatment of the system, and Lindblad theory.
  arXiv  Detail & Related papers  (2021-06-09T16:21:31Z)
• The Unruh effect in slow motion [0.0]
  We show in what regimes the probe forgets' that it is traversing cavities and thermalizes to a temperature proportional to its acceleration. We analyze in detail how this thermalization relates to the renowned Unruh effect. We propose an experimental testbed for the direct detection of the Unruh effect at relatively low probe speeds and accelerations.
  arXiv  Detail & Related papers  (2020-11-16T19:09:39Z)
• 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)
• Decoherence of a uniformly accelerated finite-time detector [0.0]
  We study a uniformly accelerated detector coupled to a massless scalar field for a finite time interval. By considering the detector initially prepared in a superposition state, qubit state, we find that the acceleration induces decoherence on the qubit.
  arXiv  Detail & Related papers  (2020-08-27T19:46:05Z)

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.