arXiv:1210.8309 [quant-ph]AbstractReferencesReviewsResources
Quantum discord of Bell cat-states under amplitude damping
Published 2012-10-31Version 1
The evolution of pairwise quantum correlations of Bell cat-states under amplitude damping is examined using the concept of quantum discord which goes beyond entanglement. A closed expression of the quantum discord is explicitly derived. We used of the Koashi-Winter relation. A relation which facilitates the optimization process of the conditional entropy. We also discuss the temporal evolution of bipartite quantum correlations under a dephasing channel and compare the behaviors of quantum discord and entanglement whose properties are characterized through the concurrence.
Journal: J. Phys. A: Math. Theor. 45 (2012) 325302
Categories: quant-ph
Keywords: quantum discord, bell cat-states, amplitude damping, bipartite quantum correlations, pairwise quantum correlations
Tags: journal article
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