Vacuum entanglement enhancement by a weak gravitational field

Details Vacuum entanglement enhancement by a weak gravitational field Vacuum entanglement enhancement by a weak gravitational field

2010-08-29

arxiv.org/abs/1008.4926v1

Phys.Rev.D83:045019,2011

Physics

Quantum Physics

6 pages, 1 figure

Scientific paper

10.1103/PhysRevD.83.045019

Separate regions in space are generally entangled, even in the vacuum state.
It is known that this entanglement can be swapped to separated Unruh-DeWitt
detectors, i.e., that the vacuum can serve as a source of entanglement. Here,
we demonstrate that, in the presence of curvature, the amount of entanglement
that Unruh-DeWitt detectors can extract from the vacuum can be increased.

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