Continuous variable entanglement sharing in non-inertial frames

Details Continuous variable entanglement sharing in non-inertial frames Continuous variable entanglement sharing in non-inertial frames

2007-01-12

arxiv.org/abs/quant-ph/0701074v3

Phys.Rev.A76:062112,2007

Physics

Quantum Physics

19 pages, 13 EPS figures (most low-res due to oversize); terminology revised

Scientific paper

10.1103/PhysRevA.76.062112

We study the distribution of entanglement between modes of a free scalar field from the perspective of observers in uniform acceleration. We consider a two-mode squeezed state of the field from an inertial perspective, and analytically study the degradation of entanglement due to the Unruh effect, in the cases of either one or both observers undergoing uniform acceleration. We find that for two observers undergoing finite acceleration, the entanglement vanishes between the lowest frequency modes. The loss of entanglement is precisely explained as a redistribution of the inertial entanglement into multipartite quantum correlations among accessible and unaccessible modes from a non-inertial perspective. We show that classical correlations are also lost from the perspective of two accelerated observers but conserved if one of the observers remains inertial.

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