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Reveal quantum correlation in complementary bases.


ABSTRACT: An essential feature of genuine quantum correlation is the simultaneous existence of correlation in complementary bases. We reveal this feature of quantum correlation by defining measures based on invariance under a basis change. For a bipartite quantum state, the classical correlation is the maximal correlation present in a certain optimum basis, while the quantum correlation is characterized as a series of residual correlations in the mutually unbiased bases. Compared with other approaches to quantify quantum correlation, our approach gives information-theoretical measures that directly reflect the essential feature of quantum correlation.

SUBMITTER: Wu S 

PROVIDER: S-EPMC3916891 | biostudies-other | 2014

REPOSITORIES: biostudies-other

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