Quantum correlation exists in any non-product state.

ABSTRACT: Simultaneous existence of correlation in complementary bases is a fundamental feature of quantum correlation, and we show that this characteristic is present in any non-product bipartite state. We propose a measure via mutually unbiased bases to study this feature of quantum correlation, and compare it with other measures of quantum correlation for several families of bipartite states.

SUBMITTER: Guo Y 

PROVIDER: S-EPMC4248285 | biostudies-other | 2014

REPOSITORIES: biostudies-other