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arXiv · 1005.5064

Correlation function and mutual information

R. X. Dong·D. L. Zhou
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Abstract

Correlation function and mutual information are two powerful tools to characterize the correlations in a quantum state of a composite system, widely used in many-body physics and in quantum information science, respectively. We find that these two tools may give different conclusions about the order of the degrees of correlation in two specific two-qubit states. This result implies that the orderings of bipartite quantum states according to the degrees of correlation depend on which correlation measure we adopt.

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R. X. Dong, D. L. Zhou. 2010-05-27. Correlation function and mutual information. https://doi.org/10.1088/1751-8113/43/44/445302

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