Entanglement Amplification from Rotating Black Holes
- URL: http://arxiv.org/abs/2010.14517v1
- Date: Tue, 27 Oct 2020 18:00:01 GMT
- Title: Entanglement Amplification from Rotating Black Holes
- Authors: Matthew P. G. Robbins, Laura J. Henderson, and Robert B. Mann
- Abstract summary: We study entanglement harvesting in the presence of a rotating BTZ black hole.
We find that rotation can significantly amplify the harvested vacuum entanglement.
We also find that the entanglement shadow -- a region near the black hole from which entanglement cannot be extracted -- is diminished in size as the black hole's angular momentum increases.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: The quantum vacuum has long been known to be characterized by field
correlations between spacetime points. These correlations can be swapped with a
pair of particle detectors, modelled as simple two-level quantum systems
(Unruh-DeWitt detectors) via a process known as entanglement harvesting. We
study this phenomenon in the presence of a rotating BTZ black hole, and find
that rotation can significantly amplify the harvested vacuum entanglement.
Concurrence between co-rotating detectors is amplified by as much as an order
of magnitude at intermediate distances from the black hole relative to that at
large distances. The effect is most pronounced for near-extremal small mass
black holes, and allows for harvesting at large spacelike detector separations.
We also find that the entanglement shadow -- a region near the black hole from
which entanglement cannot be extracted -- is diminished in size as the black
hole's angular momentum increases.
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