Geometric measure of quantum discord and total quantum correlations in an<i>N</i>-partite quantum state
Geometric measure of quantum discord and total quantum correlations in an<i>N</i>-partite quantum state
Quantum discord, as introduced by Olliver and Zurek [Phys. Rev. Lett. \textbf{88}, 017901 (2001)], is a measure of the discrepancy between quantum versions of two classically equivalent expressions for mutual information and is found to be useful in quantification and application of quantum correlations in mixed states. It is viewed …