Degenerate detectors are unable to harvest spacelike entanglement
arXiv:1703.02982 · doi:10.1103/PhysRevD.95.105009
Abstract
We show, under a very general set of assumptions, that pairs of identical particle detectors in spacelike separation, such as atomic probes, can only harvest entanglement from the vacuum state of a quantum field when they have a non-zero energy gap. Furthermore, we show that degenerate probes are strongly challenged to become entangled through their interaction through scalar and electromagnetic fields even in full light-contact. We relate these results to previous literature on remote entanglement generation and entanglement harvesting, giving insight into the energy gap's protective role against local noise, which prevents the detectors from getting entangled through the interaction with the field.
10 pages. RevTeX 4.1. V2: Updated to match published version
References in corpus (4)
Cited by in corpus (34)
- Harvesting Entanglement with Detectors Freely Falling into a Black Hole
- Harvesting correlations from thermal and squeezed coherent states
- Unruh-DeWitt detectors and entanglement: the anti-de Sitter space
- Quantum Temporal Superposition: the case of QFT
- General no-go theorem for entanglement extraction
- Entanglement harvesting and divergences in quadratic Unruh-DeWitt detectors pairs
- Transmission of quantum information through quantum fields
- Non-perturbative analysis of entanglement harvesting from coherent field states
- Quantum teleportation in vacuum using only Unruh-DeWitt detectors
- Bandlimited Entanglement Harvesting
- Harvesting entanglement from complex scalar and fermionic fields with linearly coupled particle detectors
- Harvesting entanglement from the gravitational vacuum
- The geometry of spacetime from quantum measurements
- Effective master equations for two accelerated qubits
- Faster-than-light signalling in the rotating-wave approximation
- Quantum entanglement in cosmology
- All coherent field states entangle equally
- The role of quantum degrees of freedom of relativistic fields in quantum information protocols
- Direct measurement of the two-point function in quantum fields
- Zero mode suppression of superluminal signals in light-matter interactions
- Entanglement dynamics: Generalized master equation for uniformly accelerated two-level systems
- Tripartite Entanglement Extraction from the Black Hole Vacuum
- Non-perturbative method for particle detectors with continuous interactions
- Directional dependence of the Unruh effect for spatially extended detectors
- Closed-form expressions for smeared bi-distributions of a massless scalar field: non-perturbative and asymptotic results in relativistic quantum information
- Light, matter, and quantum randomness generation: A relativistic quantum information perspective
- Violation of Bell-CHSH inequalities through optimal local filters in the vacuum
- Locality and entanglement harvesting in covariantly bandlimited scalar fields
- The stress-energy tensor of an Unruh-DeWitt detector
- Harvesting entanglement from the cylindrical gravitational wave spacetime
- A relativistic QFT description for the interaction of a spin with a magnetic field
- A dynamic theory of entanglement for uniformly accelerated atoms
- Bipartite and tripartite entanglement in pure dephasing relativistic spin-boson model
- Contextuality from the vacuum