Device-independent witness for the nonobjectivity of quantum dynamics

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dc.contributor.authorAraújo, Rafael Chaves Souto
dc.contributor.authorRodari, Giovanni
dc.contributor.authorMoreno Filho, Marcos George Magalhães
dc.contributor.authorPolino, Emanuele
dc.contributor.authorNery, Ranieri Vieira
dc.contributor.authorSuprano, Alessia
dc.contributor.authorDuarte, Cristhiano
dc.contributor.authorSciarrino, Fabio
dc.contributor.authorPoderini, Davide
dc.date.accessioned2025-05-29T18:30:12Z
dc.date.available2025-05-29T18:30:12Z
dc.date.issued2023-09-05
dc.description.resumoQuantum Darwinism offers an explanation for the emergence of classical objective features (those we are used to at macroscopic scales) from quantum properties at the microscopic level. The interaction of a quantum system with its surroundings redundantly proliferates information to many parts of the environment, turning it accessible and objective to different observers. However, given that one cannot probe the quantum system directly, only its environment, how to determine whether an unknown quantum property can be deemed objective? Here we propose a probabilistic framework to analyze this question and show that objectivity implies a Bell-like inequality. Among several other results, we show quantum violations of this inequality, a device-independent proof of the nonobjectivity of quantum correlations. We also implement a photonic experiment where the temporal degree of freedom of photons is the quantum system of interest, while their polarization acts as the environment. Employing a fully black-box approach, we achieve the violation of a Bell-like inequality, thus certifying the nonobjectivity of the underlying quantum dynamics in a fully device-independent framework
dc.identifier.citationARAÚJO, Rafael Chaves Souto; PODERINI, Davide; RODARI, Giovanni; MORENO FILHO, Marcos George Magalhães ; POLINO, Emanuele; NERY, Ranieri Vieira; SUPRANO, Alessia; DUARTE, Cristhiano; SCIARRINO, Fabio. Device-independent witness for the nonobjectivity of quantum dynamics. PHYSICAL REVIEW A, v. 108, p. 032201, 2023. DOI: 10.1103/PhysRevA.108.032201. Disponível em: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.108.032201. Acesso em: 18 mar. 2025.
dc.identifier.doi10.1103/PhysRevA.108.032201
dc.identifier.issn2469-9934
dc.identifier.otherDOI 10.1103/PhysRevA.108.032201
dc.identifier.urihttps://repositorio.ufrn.br/handle/123456789/63735
dc.languageenpt_BR
dc.language.isoen
dc.publisherPhysical Review Apt_BR
dc.subjectNonlocalitypt_BR
dc.subjectNão localidadept_BR
dc.subjectQuantum foundationspt_BR
dc.subjectFundações quânticaspt_BR
dc.subjectQuantum opticspt_BR
dc.subjectÓptica quânticapt_BR
dc.subjectOpen quantum systems & decoherencept_BR
dc.subjectSistemas quânticos abertos e decoerênciapt_BR
dc.titleDevice-independent witness for the nonobjectivity of quantum dynamics
dc.typearticlept_BR

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