Quantum correlations and least disturbing local measurements

cic.isFulltext true es
cic.isPeerReviewed true es
cic.lugarDesarrollo Universidad Nacional de La Plata es
cic.version info:eu-repo/semantics/publishedVersion es
dc.date.accessioned 2016-09-13T11:44:42Z
dc.date.available 2016-09-13T11:44:42Z
dc.identifier.uri https://digital.cic.gba.gob.ar/handle/11746/4217
dc.title Quantum correlations and least disturbing local measurements en
dc.type Artículo es
dcterms.abstract We examine the evaluation of the minimum information loss due to an unread local measurement in mixed states of bipartite systems, for a general entropic form. Such quantity provides a measure of quantum correlations, reducing for pure states to the generalized entanglement entropy, while in the case of mixed states it vanishes just for classically correlated states with respect to the measured system, as the quantum discord. General stationary conditions are provided, together with their explicit form for general two-qubit states. Closed expressions for the minimum information loss as measured by quadratic and cubic entropies are also derived for general states of two-qubit systems. As application, we analyze the case of states with maximally mixed marginals, where a general evaluation is provided, as well as X states and the mixture of two aligned states. en
dcterms.creator.author Rossignoli, Raúl Dante es
dcterms.creator.author Canosa, Norma es
dcterms.creator.author Ciliberti, Leonardo es
dcterms.extent 10 p. es
dcterms.identifier.url Documento completo es
dcterms.isPartOf.issue vol. 84, nº 5 es
dcterms.isPartOf.series Physical Review A es
dcterms.issued 2011
dcterms.language Inglés es
dcterms.license Attribution 4.0 International (BY 4.0) es
dcterms.publisher APS phisycs es
dcterms.subject Quantum information en
dcterms.subject.materia Ciencias Físicas es
Paquete original
Mostrando 1 - 1 de 1
Imagen en miniatura
Quantum correlations and least disturbing1112.1587.pdf-PDFA.pdf
305.64 KB
Adobe Portable Document Format
Documento completo