Causal modeling the delayed-choice experiment

Araújo, Rafael Chaves Souto; Lemos, Gabriela Barreto; Pienaar, Jacques Lavin

Causal modeling the delayed-choice experiment

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dc.contributor.author	Araújo, Rafael Chaves Souto
dc.contributor.author	Lemos, Gabriela Barreto
dc.contributor.author	Pienaar, Jacques Lavin
dc.date.accessioned	2020-09-28T14:27:51Z
dc.date.available	2020-09-28T14:27:51Z
dc.date.issued	2018-05-07
dc.description.resumo	Wave-particle duality has become one of the flagships of quantum mechanics. This counterintuitive concept is highlighted in a delayed-choice experiment, where the experimental setup that reveals either the particle or wave nature of a quantum system is decided after the system has entered the apparatus. Here we consider delayed-choice experiments from the perspective of device-independent causal models and show their equivalence to a prepare-and-measure scenario. Within this framework, we consider Wheeler’s original proposal and its variant using a quantum control and show that a simple classical causal model is capable of reproducing the quantum mechanical predictions. Nonetheless, among other results, we show that, in a slight variant of Wheeler’s gedanken experiment, a photon in an interferometer can indeed generate statistics incompatible with any nonretrocausal hidden variable model, whose dimensionality is the same as that of the quantum system it is supposed to mimic. Our proposal tolerates arbitrary losses and inefficiencies, making it specially suited to loophole-free experimental implementations	pt_BR
dc.identifier.citation	CHAVES, Rafael; LEMOS, Gabriela Barreto; PIENAAR, Jacques. Causal Modeling the Delayed-Choice Experiment. Physical Review Letters, [S.L.], v. 120, n. 19, p. 190401, 7 maio 2018. Disponível em: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.120.190401. Acesso em: 16 set. 2020. http://dx.doi.org/10.1103/physrevlett.120.190401.	pt_BR
dc.identifier.doi	10.1103/physrevlett.120.190401
dc.identifier.issn	1678-765X
dc.identifier.uri	https://repositorio.ufrn.br/handle/123456789/30212
dc.language	en	pt_BR
dc.publisher	American Physical Society	pt_BR
dc.subject	Quantum communication	pt_BR
dc.subject	Quantum correlations in quantum information	pt_BR
dc.subject	Quantum foundations	pt_BR
dc.subject	Quantum information processing	pt_BR
dc.title	Causal modeling the delayed-choice experiment	pt_BR
dc.type	article	pt_BR