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Título: | Noncontextual wirings. |
Autor(es): | Amaral, Barbara Lopes Cabello Quintero, Adán Cunha, Marcelo de Oliveira Terra Aolita, Leandro |
Data do documento: | 2018 |
Referência: | AMARAL, B. L. et al. Noncontextual wirings. Physical Review Letters, v. 120, p. 130403, mar. 2018. Disponível em: <https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.120.130403>. Acesso em: 16 jun. 2018. |
Resumo: | Contextuality is a fundamental feature of quantum theory necessary for certain models of quantum computation and communication. Serious steps have therefore been taken towards a formal framework for contextuality as an operational resource. However, the main ingredient of a resource theory—a concrete, explicit form of free operations of contextuality—was still missing. Here we provide such a component by introducing noncontextual wirings: a class of contextuality-free operations with a clear operational interpretation and a friendly parametrization. We characterize them completely for general black-box measurement devices with arbitrarily many inputs and outputs. As applications, we show that the relative entropy of contextuality is a contextuality monotone and that maximally contextual boxes that serve as contextuality bits exist for a broad class of scenarios. Our results complete a unified resource-theoretic framework for contextuality and Bell nonlocality. |
URI: | http://www.repositorio.ufop.br/handle/123456789/10502 |
Link para o artigo: | https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.120.130403 |
ISSN: | 10797114 |
Aparece nas coleções: | DEMAT - Artigos publicados em periódicos |
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ARTIGO_NoncontextualWirings.pdf Restricted Access | 217,78 kB | Adobe PDF | Visualizar/Abrir |
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