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Correlated multipartite quantum states

AutorBatle, Josep; Casas, Montserrat ; Plastino, A.
Fecha de publicación13-mar-2013
EditorAmerican Physical Society
CitaciónPhysical Review - Section A - Atomic Molecular and Optical Physics 87(3): 032318 (2013)
ResumenWe investigate quantum states that possess both maximum entanglement and maximum discord between the pertinent parties. Since entanglement (discord) is defined only for bipartite (two-qubit) systems, we use an appropriate sum over all bipartitions as the associated measure. The ensuing definition—not new for entanglement—is thus extended here to quantum discord. Also, additional dimensions within the parties are considered (qudits). We also discuss quantum correlations that induce Mermin's Bell-inequality violation for all multiqubit systems. One finds some differences when quantum mechanics is defined over the field of real or of complex numbers.
Versión del editorhttp://dx.doi.org/10.1103/PhysRevA.87.032318
URIhttp://hdl.handle.net/10261/117050
DOI10.1103/PhysRevA.87.032318
ISSN1050-2947
E-ISSN1094-1622
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