Continuous-variable entanglement sharing in noninertial frames

Gerardo Adesso, Ivette Fuentes-Schuller, Marie Ericsson

    Research output: Contribution to journalArticleResearchpeer-review

    100 Citations (Scopus)


    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 inaccessible modes from a noninertial 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. © 2007 The American Physical Society.
    Original languageEnglish
    Article number062112
    JournalPhysical Review A - Atomic, Molecular, and Optical Physics
    Issue number6
    Publication statusPublished - 27 Dec 2007


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