Titel
Violation of local realism with freedom of choice
Autor*in
Thomas Scheidl
Institut für Quantenoptik und Quanteninformation, Innsbruck
Autor*in
Rupert Ursin
Österreichische Akademie der Wissenschaften (ÖAW)
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Abstract
Bell's theorem shows that local realistic theories place strong restrictions on observable correlations between different systems, giving rise to Bell's inequality which can be violated in experiments using entangled quantum states. Bell's theorem is based on the assumptions of realism, locality, and the freedom to choose between measurement settings. In experimental tests, "loopholes"arise which allow observed violations to still be explained by local realistic theories. Violating Bell's inequality while simultaneously closing all such loopholes is one of the most significant still open challenges in fundamental physics today. In this paper, we present an experiment that violates Bell's inequality while simultaneously closing the locality loophole and addressing the freedom-of-choice loophole, also closing the latter within a reasonable set of assumptions. We also explain that the locality and freedom-of-choice loopholes can be closed only within nondeterminism, i.e., in the context of stochastic local realism.
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
https://phaidra.univie.ac.at/o:244144
Erschienen in
Titel
Proceedings of the National Academy of Sciences of the United States of America (PNAS)
Band
107
Ausgabe
46
Seitenanfang
19708
Seitenende
19713
Erscheinungsdatum
01.12.2010
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