Tomographic Discord and Quantum Correlations for System of Qubits

Published 17 Jun 2013 in quant-ph | (1306.4039v1)

Abstract: The difference of quantum mutual information for bipartite system of qubits and minimum taken with respect to local unitary transformation group is introduced as a characteristic of quantum correlations.The two qubits example (and specifically the two qubits X state) is studied in some details.

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