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Title: Noncontextual wirings.
Authors: Amaral, Barbara Lopes
Cabello Quintero, Adán
Cunha, Marcelo de Oliveira Terra
Aolita, Leandro
Issue Date: 2018
Citation: AMARAL, B. L. et al. Noncontextual wirings. Physical Review Letters, v. 120, p. 130403, mar. 2018. Disponível em: <>. Acesso em: 16 jun. 2018.
Abstract: 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.
ISSN: 10797114
Appears in Collections:DEMAT - Artigos publicados em periódicos

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