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Correlation measures in bipartite states and entanglement irreversibility (1110.6873v3)
Published 31 Oct 2011 in quant-ph, math-ph, and math.MP
Abstract: We derive quantitative relations among several naturally defined measures of classical and nonclassical correlations in a bipartite quantum state. We also obtain an upper bound of entanglement irreversibility and a sufficient condition for reversible entanglement. The additivity of entanglement of formation is directly related to the additivity of quantum discord as well as a certain measure of classical correlation.