New features of quantum discord uncovered by q-entropies
- Autores
- Majtey, A. P.; Plastino, Ángel Ricardo; Plastino, Ángel Luis
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The notion of quantum discord introduced by Ollivier and Zurek [Phys. Rev. Lett 88 (2001) 017901] (see also Henderson and Vedral [J. Phys. A 34 (2001) 6899]) has attracted increasing attention, in recent years, as an entropic quantifier of non-classical features pertaining to the correlations exhibited by bipartite quantum systems. Here we generalize the notion so as to encompass power-law q-entropies (that reduce to the standard Shannon entropy in the limit q→1) and study the concomitant consequences. The ensuing, new discord-like measures we advance describe aspects of non-classicality that are different from those associated with the standard quantum discord. A particular manifestation of this difference concerns a feature related to order. Let D1 stand for the standard, Shannon-based discord measure and Dq for the q≠1 one. If two quantum states A,B are such that D1(A)>D 1(B), this order-relation does not remain invariant under a change from D1 to Dq.
Fil: Majtey, A. P.. Universidad de Granada; España
Fil: Plastino, Ángel Ricardo. Universidad Nacional de La Plata. Centro Regional de Estudios Genómicos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Fil: Plastino, Ángel Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina - Materia
-
MUTUAL INFORMATION
QUANTUM DISCORD
QUANTUM INFORMATION
TSALLIS ENTROPY - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/193696
Ver los metadatos del registro completo
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New features of quantum discord uncovered by q-entropiesMajtey, A. P.Plastino, Ángel RicardoPlastino, Ángel LuisMUTUAL INFORMATIONQUANTUM DISCORDQUANTUM INFORMATIONTSALLIS ENTROPYhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The notion of quantum discord introduced by Ollivier and Zurek [Phys. Rev. Lett 88 (2001) 017901] (see also Henderson and Vedral [J. Phys. A 34 (2001) 6899]) has attracted increasing attention, in recent years, as an entropic quantifier of non-classical features pertaining to the correlations exhibited by bipartite quantum systems. Here we generalize the notion so as to encompass power-law q-entropies (that reduce to the standard Shannon entropy in the limit q→1) and study the concomitant consequences. The ensuing, new discord-like measures we advance describe aspects of non-classicality that are different from those associated with the standard quantum discord. A particular manifestation of this difference concerns a feature related to order. Let D1 stand for the standard, Shannon-based discord measure and Dq for the q≠1 one. If two quantum states A,B are such that D1(A)>D 1(B), this order-relation does not remain invariant under a change from D1 to Dq.Fil: Majtey, A. P.. Universidad de Granada; EspañaFil: Plastino, Ángel Ricardo. Universidad Nacional de La Plata. Centro Regional de Estudios Genómicos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Plastino, Ángel Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaElsevier Science2012-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/193696Majtey, A. P.; Plastino, Ángel Ricardo; Plastino, Ángel Luis; New features of quantum discord uncovered by q-entropies; Elsevier Science; Physica A: Statistical Mechanics and its Applications; 391; 7; 4-2012; 2491-24990378-4371CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.physa.2011.11.062info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0378437111008971info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:59:31Zoai:ri.conicet.gov.ar:11336/193696instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:59:31.704CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
New features of quantum discord uncovered by q-entropies |
| title |
New features of quantum discord uncovered by q-entropies |
| spellingShingle |
New features of quantum discord uncovered by q-entropies Majtey, A. P. MUTUAL INFORMATION QUANTUM DISCORD QUANTUM INFORMATION TSALLIS ENTROPY |
| title_short |
New features of quantum discord uncovered by q-entropies |
| title_full |
New features of quantum discord uncovered by q-entropies |
| title_fullStr |
New features of quantum discord uncovered by q-entropies |
| title_full_unstemmed |
New features of quantum discord uncovered by q-entropies |
| title_sort |
New features of quantum discord uncovered by q-entropies |
| dc.creator.none.fl_str_mv |
Majtey, A. P. Plastino, Ángel Ricardo Plastino, Ángel Luis |
| author |
Majtey, A. P. |
| author_facet |
Majtey, A. P. Plastino, Ángel Ricardo Plastino, Ángel Luis |
| author_role |
author |
| author2 |
Plastino, Ángel Ricardo Plastino, Ángel Luis |
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author author |
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MUTUAL INFORMATION QUANTUM DISCORD QUANTUM INFORMATION TSALLIS ENTROPY |
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MUTUAL INFORMATION QUANTUM DISCORD QUANTUM INFORMATION TSALLIS ENTROPY |
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https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
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The notion of quantum discord introduced by Ollivier and Zurek [Phys. Rev. Lett 88 (2001) 017901] (see also Henderson and Vedral [J. Phys. A 34 (2001) 6899]) has attracted increasing attention, in recent years, as an entropic quantifier of non-classical features pertaining to the correlations exhibited by bipartite quantum systems. Here we generalize the notion so as to encompass power-law q-entropies (that reduce to the standard Shannon entropy in the limit q→1) and study the concomitant consequences. The ensuing, new discord-like measures we advance describe aspects of non-classicality that are different from those associated with the standard quantum discord. A particular manifestation of this difference concerns a feature related to order. Let D1 stand for the standard, Shannon-based discord measure and Dq for the q≠1 one. If two quantum states A,B are such that D1(A)>D 1(B), this order-relation does not remain invariant under a change from D1 to Dq. Fil: Majtey, A. P.. Universidad de Granada; España Fil: Plastino, Ángel Ricardo. Universidad Nacional de La Plata. Centro Regional de Estudios Genómicos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina Fil: Plastino, Ángel Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina |
| description |
The notion of quantum discord introduced by Ollivier and Zurek [Phys. Rev. Lett 88 (2001) 017901] (see also Henderson and Vedral [J. Phys. A 34 (2001) 6899]) has attracted increasing attention, in recent years, as an entropic quantifier of non-classical features pertaining to the correlations exhibited by bipartite quantum systems. Here we generalize the notion so as to encompass power-law q-entropies (that reduce to the standard Shannon entropy in the limit q→1) and study the concomitant consequences. The ensuing, new discord-like measures we advance describe aspects of non-classicality that are different from those associated with the standard quantum discord. A particular manifestation of this difference concerns a feature related to order. Let D1 stand for the standard, Shannon-based discord measure and Dq for the q≠1 one. If two quantum states A,B are such that D1(A)>D 1(B), this order-relation does not remain invariant under a change from D1 to Dq. |
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2012 |
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2012-04 |
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http://hdl.handle.net/11336/193696 Majtey, A. P.; Plastino, Ángel Ricardo; Plastino, Ángel Luis; New features of quantum discord uncovered by q-entropies; Elsevier Science; Physica A: Statistical Mechanics and its Applications; 391; 7; 4-2012; 2491-2499 0378-4371 CONICET Digital CONICET |
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Majtey, A. P.; Plastino, Ángel Ricardo; Plastino, Ángel Luis; New features of quantum discord uncovered by q-entropies; Elsevier Science; Physica A: Statistical Mechanics and its Applications; 391; 7; 4-2012; 2491-2499 0378-4371 CONICET Digital CONICET |
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