Total correlations and mutual information |
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Authors: | Zbigniew Walczak |
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Affiliation: | Department of Theoretical Physics, University of Lodz, Pomorska 149/153, 90-236 ?ód?, Poland |
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Abstract: | In quantum information theory it is generally accepted that quantum mutual information is an information-theoretic measure of total correlations of a bipartite quantum state. We argue that there exist quantum states for which quantum mutual information cannot be considered as a measure of total correlations. Moreover, for these states we propose a different way of quantifying total correlations. |
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Keywords: | 03.67.-a 03.65.Ta |
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