Quantum correlations between each qubit in a two-atom system and the environment in terms of interatomic distance

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dc.contributor.authorBerrada, K.
dc.contributor.authorFanchini, F. F. [UNESP]
dc.contributor.authorAbdel-Khalek, S.
dc.contributor.institutionAbdus Salam International Centre for Theoretical Physics
dc.contributor.institutionUniversité Mohammed V-Agdal
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionSohag University
dc.contributor.institutionTaif University
dc.date.accessioned2022-04-29T02:57:15Z
dc.date.available2022-04-29T02:57:15Z
dc.date.issued2012-05-22
dc.description.abstractThe quantum correlations between a qubit and its environment are described quantitatively in terms of interatomic distance. Specifically, considering a realistic system of two two-level atoms and taking into account the dipole-dipole interaction and collective damping, the quantum entanglement and quantum discord are investigated during the dissipative process as functions of the interatomic distance. For atoms that are initially maximally entangled, it turns out that there is a critical distance at which each atom is maximally quantum correlated with its environment. Counterintuitively, the approach of the two atoms can maximize the entanglement between each one and the environment and, even at the same distance, minimize the loss of entanglement between the pair. © 2012 American Physical Society.en
dc.description.affiliationAbdus Salam International Centre for Theoretical Physics, Strada Costiera 11, Miramare-Trieste
dc.description.affiliationLaboratoire de Physique Théorique Faculté des Sciences Université Mohammed V-Agdal, Av. Ibn Battouta, Agdal Rabat
dc.description.affiliationDepartamento de Física Faculdade de Ciências UNESP, Bauru, SP, CEP 17033-360
dc.description.affiliationMathematics Department Faculty of Science Sohag University, 82524 Sohag
dc.description.affiliationMathematics Department Faculty of Science Taif University, Taif
dc.description.affiliationUnespDepartamento de Física Faculdade de Ciências UNESP, Bauru, SP, CEP 17033-360
dc.identifierhttp://dx.doi.org/10.1103/PhysRevA.85.052315
dc.identifier.citationPhysical Review A - Atomic, Molecular, and Optical Physics, v. 85, n. 5, 2012.
dc.identifier.doi10.1103/PhysRevA.85.052315
dc.identifier.issn1050-2947
dc.identifier.issn1094-1622
dc.identifier.scopus2-s2.0-84861616696
dc.identifier.urihttp://hdl.handle.net/11449/226831
dc.language.isoeng
dc.relation.ispartofPhysical Review A - Atomic, Molecular, and Optical Physics
dc.sourceScopus
dc.titleQuantum correlations between each qubit in a two-atom system and the environment in terms of interatomic distanceen
dc.typeArtigo
unesp.departmentFísica - FCpt

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