Quantum discord and multipartite correlations

Details Quantum discord and multipartite correlations Quantum discord and multipartite correlations

2011-01-31

arxiv.org/abs/1101.6057v3

EPL, 96 (2011) 60003

Physics

Quantum Physics

7 pages

Scientific paper

10.1209/0295-5075/96/60003

Recently, it was realized that quantum discord can be seen as the minimal amount of correlations which are lost when some local quantum operations are performed. Based on this formulation of quantum discord, we provide a systematical analysis of quantum and classical correlations present in both bipartite and multipartite quantum systems. As a natural result of this analysis, we introduce a new measure of the overall quantum correlations which is lower bounded by quantum discord.

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