Local Deterministic Model of Singlet State Correlations Based on Relaxing Measurement Independence

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Title Local Deterministic Model of Singlet State Correlations Based on Relaxing Measurement Independence
Author Hall, Michael
Journal Name Physical Review Letters
Year Published 2010
Place of publication United States
Publisher American Physical Society
Abstract The derivation of Bell inequalities requires an assumption of measurement independence, related to the amount of free will experimenters have in choosing measurement settings. Violation of these inequalities by singlet state correlations brings this assumption into question. A simple measure of the degree of measurement independence is defined for correlation models, and it is shown that all spin correlations of a singlet state can be modeled via giving up just 14% of measurement independence. The underlying model is deterministic and no signaling. It may thus be favorably compared with other underlying models of the singlet state, which require maximum indeterminism or maximum signaling. A local deterministic model is also given that achieves the maximum possible violation of the well-known Bell–Clauser-Horne-Shimony-Holt inequality, at a cost of only 1/3 of measurement independence.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1103/PhysRevLett.105.250404
Copyright Statement Copyright 2010 American Physical Society. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
Volume 105
Issue Number 25
Page from 250404-1
Page to 250404-4
ISSN 0031-9007
Date Accessioned 2011-12-05
Language en_US
Research Centre Centre for Quantum Dynamics
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Quantum Information, Computation and Communication; Quantum Physics
URI http://hdl.handle.net/10072/42810
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1x

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