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arXiv · 1804.02651

Internal entanglement and external correlations of any form limit each other

S. Camalet
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Abstract

We show a relation between entanglement and correlations of any form. The internal entanglement of a bipartite system, and its correlations with another system, limit each other. A measure of correlations, of any nature, cannot increase under local operations. Examples are the entanglement monotones, the mutual information, that quantifies total correlations, and the Henderson-Vedral measure of classical correlations. External correlations, evaluated by such a measure, set a tight upper bound on the internal entanglement that decreases as they increase, and so does quantum discord.

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S. Camalet. 2018-08-07. Internal entanglement and external correlations of any form limit each other. https://doi.org/10.1103/physrevlett.121.060504

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