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Quantum Discord and Entanglement of Quasi-Werner States based on Entangled Coherent States

Present work is an attempt to compare quantum discord and quantum entanglement of Werner states formed with the four bipartite entangled coherent states (ECS) used recently for quantum teleportation of a qubit encoded in superposed coherent state. Out of these, two based on maximally ECS are exactly similar to the perfect Werner state, while the rest two, based on non-maximally ECS, which are called quasi-Werner states behave in somewhat different ways and their quantum discord and entanglement depends on the coherent amplitude and the measurement basis.

preprint2012arXivOpen access
Manoj K. MishraAjay K. MauryaHari Prakash
physics.opticsquant-ph
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Manoj K. MishraAjay K. MauryaHari Prakash

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