Generalized entropic measures of quantum correlations

We propose a general measure of nonclassical correlations for bipartite systems based on generalized entropic functions and majorization properties. Defined as the minimum information loss due to a local measurement, in the case of pure states it reduces to the generalized entanglement entropy, i.e....

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Detalles Bibliográficos
Autores principales:	Rossignoli, Raúl Dante, Canosa, Norma Beatriz, Ciliberti, Leonardo Francisco
Formato:	Articulo Preprint
Lenguaje:	Inglés
Publicado:	2010
Materias:	Ciencias Exactas Física nonclassical correlations bipartite systems quantum correlations
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/138830
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-138830
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Exactas Física nonclassical correlations bipartite systems quantum correlations
spellingShingle	Ciencias Exactas Física nonclassical correlations bipartite systems quantum correlations Rossignoli, Raúl Dante Canosa, Norma Beatriz Ciliberti, Leonardo Francisco Generalized entropic measures of quantum correlations
topic_facet	Ciencias Exactas Física nonclassical correlations bipartite systems quantum correlations
description	We propose a general measure of nonclassical correlations for bipartite systems based on generalized entropic functions and majorization properties. Defined as the minimum information loss due to a local measurement, in the case of pure states it reduces to the generalized entanglement entropy, i.e., the generalized entropy of the reduced state. However, in the case of mixed states it can be nonzero in separable states, vanishing just for states diagonal in a general product basis, like the quantum discord. Simple quadratic measures of quantum correlations arise as a particular case of the present formalism. The minimum information loss due to a joint local measurement is also discussed. The evaluation of these measures in simple relevant cases is as well provided, together with comparison with the corresponding entanglement monotones.
format	Articulo Preprint
author	Rossignoli, Raúl Dante Canosa, Norma Beatriz Ciliberti, Leonardo Francisco
author_facet	Rossignoli, Raúl Dante Canosa, Norma Beatriz Ciliberti, Leonardo Francisco
author_sort	Rossignoli, Raúl Dante
title	Generalized entropic measures of quantum correlations
title_short	Generalized entropic measures of quantum correlations
title_full	Generalized entropic measures of quantum correlations
title_fullStr	Generalized entropic measures of quantum correlations
title_full_unstemmed	Generalized entropic measures of quantum correlations
title_sort	generalized entropic measures of quantum correlations
publishDate	2010
url	http://sedici.unlp.edu.ar/handle/10915/138830
work_keys_str_mv	AT rossignolirauldante generalizedentropicmeasuresofquantumcorrelations AT canosanormabeatriz generalizedentropicmeasuresofquantumcorrelations AT cilibertileonardofrancisco generalizedentropicmeasuresofquantumcorrelations
bdutipo_str	Repositorios
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Generalized entropic measures of quantum correlations

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