Article
Noncontextual wirings
Author/s | Amaral, Barbara
Cabello Quintero, Adán ![]() ![]() ![]() ![]() ![]() ![]() Terra Cunha, Marcelo Aolita, Leandro |
Department | Universidad de Sevilla. Departamento de Física Aplicada II |
Publication Date | 2018-03-29 |
Deposit Date | 2024-01-11 |
Published in |
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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 ... 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. |
Funding agencies | Ministerio de Economia, Industria y Competitividad (MINECO). España European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) Knut and Alice Wallenberg Foundation, Sweden |
Project ID. | FIS2014-60843-P
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Citation | Amaral, B., Cabello Quintero, A., Terra Cunha, M. y Aolita, L. (2018). Noncontextual wirings. Physical Review Letters, 120 (130403). https://doi.org/10.1103/PhysRevLett.120.130403. |
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