Alternative fidelity measure between quantum states

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversity of Queensland-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversity of Sydney-
Autor(es): dc.creatorMendonça, Paulo E. M. F.-
Autor(es): dc.creatorNapolitano, Reginaldo D. J.-
Autor(es): dc.creatorMarchiolli, Marcelo A.-
Autor(es): dc.creatorFoster, Christopher J.-
Autor(es): dc.creatorLiang, Yeong-Cherng-
Data de aceite: dc.date.accessioned2025-08-21T20:29:02Z-
Data de disponibilização: dc.date.available2025-08-21T20:29:02Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2008-11-19-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1103/PhysRevA.78.052330-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/225347-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/225347-
Descrição: dc.descriptionWe propose an alternative fidelity measure (namely, a measure of the degree of similarity) between quantum states and benchmark it against a number of properties of the standard Uhlmann-Jozsa fidelity. This measure is a simple function of the linear entropy and the Hilbert-Schmidt inner product between the given states and is thus, in comparison, not as computationally demanding. It also features several remarkable properties such as being jointly concave and satisfying all of Jozsa's axioms. The trade-off, however, is that it is supermultiplicative and does not behave monotonically under quantum operations. In addition, metrics for the space of density matrices are identified and the joint concavity of the Uhlmann-Jozsa fidelity for qubit states is established. © 2008 The American Physical Society.-
Descrição: dc.descriptionDepartment of Physics University of Queensland, QLD 4072-
Descrição: dc.descriptionInstituto de Física de São Carlos Universidade de São Paulo, Caixa Postal 369, 13560-970, São Carlos, SP-
Descrição: dc.descriptionInstituto de Física Teórica Universidade Estadual Paulista, Rua Pamplona 145, 01405-900, São Paulo, SP-
Descrição: dc.descriptionSchool of Physics University of Sydney, NSW 2006-
Descrição: dc.descriptionInstituto de Física Teórica Universidade Estadual Paulista, Rua Pamplona 145, 01405-900, São Paulo, SP-
Idioma: dc.languageen-
Relação: dc.relationPhysical Review A - Atomic, Molecular, and Optical Physics-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectDegree of similarities-
Palavras-chave: dc.subjectHilbert-
Palavras-chave: dc.subjectInner products-
Palavras-chave: dc.subjectLinear entropies-
Palavras-chave: dc.subjectMonotonically-
Palavras-chave: dc.subjectQuantum operations-
Palavras-chave: dc.subjectQuantum states-
Palavras-chave: dc.subjectQubit states-
Título: dc.titleAlternative fidelity measure between quantum states-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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