paper

Disentanglement, Bell-nonlocality violation and teleportation capacity of the decaying tripartite states

arXiv:1202.4546 · doi:10.1016/j.aop.2012.05.007

Abstract

Dynamics of disentanglement as measured by the tripartite negativity and Bell nonlocality as measured by the extent of violation of the multipartite Bell-type inequalities are investigated in this work. It is shown definitively that for the initial three-qubit Greenberger-Horne-Zeilinger (GHZ) or {\it W} class state preparation the Bell nonlocality suffers sudden death under the influence of thermal reservoirs. Moreover, all the Bell-nonlocal states are useful for nonclassical teleportation, while there are entangled states that do not violate any Bell-type inequalities, but still yield nonclassical teleportation fidelity.

8 pages, 5 figures, accepted for publication in Annals of Physics

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