Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Physics World

Starlight closes loophole

Published Mar 1, 2017• 0 citations
Publisher

Abstract

A Bell test of quantum entanglement that claims to use starlight to close the "freedom of choice" loophole has been performed by an international team of physicists.
DOI
10.1088/2058-7058/30/3/6

Related papers

Three groups close the loopholes in tests of Bell’s theorem

Johanna L. Miller

Until now, the quintessential demonstration of quantum entanglement has required extra assumptions.

Physics Today•Dec 30, 2015•10 citations

Matter & energy: Physicists verify quantum spookiness: Variation on classic test of entanglement closes loopholes

Andrew Grant

Science News•Sep 8, 2015•0 citations

Cosmic experiment is closing another Bell test loophole

Andrew Grant

Extra Dimensions: A new experiment combines nanoscale measurements and interstellar distances to demonstrate quantum nonlocality.

Physics Today•Dec 1, 2016•1 citation

Realistic loophole-free Bell test with atom–photon entanglement

Colin Teo, Mateus Araújo, Marco Túlio Quintino +5 more

arXiv:1206.0074•Nature Communications•Jul 3, 2013•22 citations

Violation of local realism with freedom of choice

Thomas Scheidl, Rupert Ursin, Johannes Kofler +8 more

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.

arXiv:0811.3129•Proceedings of the National Academy of Sciences•Nov 1, 2010•330 citations

Closing the Door on Einstein and Bohr’s Quantum Debate

Alain Aspect

By closing two loopholes at once, three experimental tests of Bell’s inequalities remove the last doubts that we should renounce local realism. They also open the door to new quantum information technologies.

Physics•Dec 16, 2015•191 citations
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.