General Method for Classicality Certification in the Prepare and Measure Scenario

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dc.contributor.authorAraújo, Rafael Chaves Souto
dc.contributor.authorMoreno Filho, Marcos George Magalhães
dc.contributor.authorNery, Ranieri Vieira
dc.contributor.authorBrito, Samuraí Gomes de Aguiar
dc.contributor.authorGois, Carlos de
dc.contributor.authorRabelo, Rafael
dc.date.accessioned2025-05-28T16:44:30Z
dc.date.available2025-05-28T16:44:30Z
dc.date.issued2021-07-20
dc.description.resumoPreparing and measuring physical systems are the operational building blocks of any physical experiment, and to describe them is the first purpose of any physical theory. Remarkably, even when only uncharacterized preparation and measurement devices are present, it is sometimes possible to distinguish between the behaviors of quantum and classical systems from only observational data. Certifying the physical origin of measurement statistics in the prepare and measure scenario is of primal importance for developing quantum networks, distributing quantum keys, and certifying randomness, to mention a few applications, but, surprisingly, no general methods to do so are known. We progress on this problem by crafting a general, sufficient condition to certify that a given set of preparations can only generate classical statistics, for any number of generalized measurements. As an application, we employ the method to demonstrate nonclassicality activation in the prepare and measure scenario, also considering its application in random access codes. Following that, we adapt our method to certify, again through a sufficient condition, whether a given set of measurements can never give rise to nonclassical behaviors, irrespective of what preparations they may act upon. This, in turn, allows us to find a large set of incompatible measurements that cannot be used to demonstrate nonclassicality, thus showing incompatibility is not sufficient for nonclassicality in the prepare and measure scenario.pt_BR
dc.identifier.citationARAÚJO, Rafael Chaves Souto; GOIS, Carlos de; MORENO FILHO, Marcos George Magalhães; NERY, Ranieri Vieira; BRITO, Brito, Samuraí Gomes de Aguiar; RABELO, Rafael. General Method for Classicality Certification in the Prepare and Measure Scenario. PRX Quantum, v. 2, p. 030311, 2021. DOI 10.1103/PRXQuantum.2.030311. Disponível em: https://journals.aps.org/prxquantum/abstract/10.1103/PRXQuantum.2.030311. Acesso em: 19 mar. 2025.
dc.identifier.doi10.1103/PRXQuantum.2.030311
dc.identifier.issn2691-3399
dc.identifier.otherDOI 10.1103/PRXQuantum.2.030311
dc.identifier.urihttps://repositorio.ufrn.br/handle/123456789/63702
dc.languageenpt_BR
dc.language.isoen
dc.publisherPRX Quantumpt_BR
dc.subjectQuantum communicationpt_BR
dc.subjectComunicação quânticapt_BR
dc.subjectQuantum correlations in quantum informationpt_BR
dc.subjectCorrelações quânticas em informação quânticapt_BR
dc.subjectQuantum foundationspt_BR
dc.subjectFundações quânticaspt_BR
dc.titleGeneral Method for Classicality Certification in the Prepare and Measure Scenariopt_BR
dc.typearticlept_BR

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