Continuous variable entanglement sharing in noninertial frames
2007 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 76, no 6, 062112- p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2007. Vol. 76, no 6, 062112- p.
Research subject Physics
IdentifiersURN: urn:nbn:se:uu:diva-150350DOI: 10.1103/PhysRevA.76.062112OAI: oai:DiVA.org:uu-150350DiVA: diva2:407057