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

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

2012-02-21

arxiv.org/abs/1202.4546v1

Physics

Quantum Physics

8 pages, 5 figures

Scientific paper

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.

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