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Title: Unified view of quantum and classical correlations
Authors: Modi, K. 
Paterek, T. 
Son, W. 
Vedral, V. 
Williamson, M. 
Issue Date: 22-Feb-2010
Citation: Modi, K., Paterek, T., Son, W., Vedral, V., Williamson, M. (2010-02-22). Unified view of quantum and classical correlations. Physical Review Letters 104 (8) : -. ScholarBank@NUS Repository.
Abstract: We discuss the problem of the separation of total correlations in a given quantum state into entanglement, dissonance, and classical correlations using the concept of relative entropy as a distance measure of correlations. This allows us to put all correlations on an equal footing. Entanglement and dissonance, whose definition is introduced here, jointly belong to what is known as quantum discord. Our methods are completely applicable for multipartite systems of arbitrary dimensions. We investigate additivity relations between different correlations and show that dissonance may be present in pure multipartite states. © 2010 The American Physical Society.
Source Title: Physical Review Letters
ISSN: 00319007
DOI: 10.1103/PhysRevLett.104.080501
Appears in Collections:Staff Publications

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