How measuring a quantum field affects entanglement harvesting
arXiv:2210.05692 · doi:10.1103/PhysRevD.107.045011
Abstract
We analyzed how entanglement harvesting is affected by the performance of a measurement on the quantum field. The measurement on the field is modelled as the coupling of a particle detector to the field, followed by a projective measurement performed on the detector. In our analysis, we considered different arrangements for two detectors harvesting entanglement and an ancillary detector used to perform a measurement. We found different regimes for how performing measurements on the field affects the entanglement harvested, depending on the initial and final states of the detector used to measure the field, as well as its coupling strength. We identified the regimes where it is possible to measure the field during the preparation of entanglement harvesting protocols without significantly interfering in the entanglement harvested. We also identify in what regimes the field measurement can degrade or slightly enhance the ability of particle detectors to harvest entanglement.
arXiv comment16 pages, 9 figures. RevTeX 4.2. v2: Updated to match published version
References in corpus (42)
- Notes on Some Entanglement Properties of Quantum Field Theory
- Ultrastrong coupling of a single artificial atom to an electromagnetic continuum in the nonperturbative regime
- Entanglement as a Probe of Confinement
- Entanglement from the vacuum
- Violating Bell's inequalities in the vacuum
- Entangling Power of an Expanding Universe
- Harvesting correlations from the quantum vacuum
- Acceleration-assisted entanglement harvesting and rangefinding
- Entanglement harvesting from the electromagnetic vacuum with hydrogenlike atoms
- Wavepacket detection with the Unruh-DeWitt model
- Spacetime structure and vacuum entanglement
- Harvesting Entanglement from the Black Hole Vacuum
- Quantum delocalization, gauge and quantum optics: The light-matter interaction in relativistic quantum information
- General Relativistic Quantum Optics: Finite-size particle detector models in curved spacetimes
- Entangling detectors in anti-de Sitter space
- Quantum Energy Teleportation in Spin Chain Systems
- Extracting past-future vacuum correlations using circuit QED
- Harvesting correlations in Schwarzschild and collapsing shell spacetimes
- A detector-based measurement theory for quantum field theory
- Broken covariance of particle detector models in relativistic quantum information
- Relativistic Quantum Optics: On the relativistic invariance of the light-matter interaction models
- Harvesting correlations from thermal and squeezed coherent states
- When entanglement harvesting is not really harvesting
- Unruh-DeWitt detectors and entanglement: the anti-de Sitter space
- Impossible measurements require impossible apparatus
- Entanglement amplification between superposed detectors in flat and curved spacetimes
- Entanglement harvesting for Unruh-DeWitt detectors in circular motion
- Vacuum entanglement enhancement by a weak gravitational field
- Entanglement of the Vacuum between Left, Right, Future, and Past: The Origin of Entanglement-Induced Quantum Radiation
- Is entanglement a probe of confinement?
- Long-range entanglement in the Dirac vacuum
- Bandlimited Entanglement Harvesting
- Impossible measurements revisited
- Harvesting mutual information from BTZ black hole spacetime
- Dynamics of entanglement via propagating microwave photons
- Harvesting entanglement from complex scalar and fermionic fields with linearly coupled particle detectors
- Entanglement harvesting of three Unruh-DeWitt detectors
- Weakly coupled local particle detectors cannot harvest entanglement
- All coherent field states entangle equally
- Entanglement harvesting in double-layer graphene by vacuum fluctuations in a microcavity
- Sabotaging the harvesting of correlations from quantum fields
- Dynamics of Atom-Atom Correlations in the Fermi problem
Cited by in corpus (11)
- Lorentz violation alleviates gravitationally induced entanglement degradation
- Harvesting correlations from BTZ black hole coupled to a Lorentz-violating vector field
- Particle Detectors from Localized Quantum Field Theories
- Can the latent signatures of quantum superposition be detected through correlation harvesting?
- Decoding Quantum Field Theory with Machine Learning
- Entanglement Harvesting and Quantum Discord of Alpha Vacua in de Sitter Space
- Non-perturbative method for particle detectors with continuous interactions
- Closed-form expressions for smeared bi-distributions of a massless scalar field: non-perturbative and asymptotic results in relativistic quantum information
- Harvesting Fermionic Field Entanglement in Schwarzschild Spacetime
- Duality between amplitude and derivative coupled particle detectors in the limit of large energy gaps
- A relativistic QFT description for the interaction of a spin with a magnetic field