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|Title:||Bell tests with min-entropy sources||Authors:||Thinh, L.P.
|Issue Date:||25-Jun-2013||Citation:||Thinh, L.P., Sheridan, L., Scarani, V. (2013-06-25). Bell tests with min-entropy sources. Physical Review A - Atomic, Molecular, and Optical Physics 87 (6) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevA.87.062121||Abstract:||Device independent protocols rely on the violation of Bell inequalities to certify properties of the resources available. The violation of the inequalities is meaningless without a few well-known assumptions. One of these is measurement independence, the property that the source of the states measured in an inequality is uncorrelated from the measurements selected. Since this assumption cannot be confirmed, we consider the consequences of relaxing it and find that the definition chosen is critically important to the observed behavior. Considering a definition that is a bound on the min-entropy of the measurement settings, we find lower bounds on the min-entropy of the source used to choose the inputs required to deduce any quantum or nonlocal behavior from a Bell inequality violation. These bounds are significantly more restrictive than the ones obtained by endowing the measurement-input source with the further structure of a Santha-Vazirani source. We also outline a procedure for finding tight bounds and study the set of probabilities that can result from relaxing measurement dependence. © 2013 American Physical Society.||Source Title:||Physical Review A - Atomic, Molecular, and Optical Physics||URI:||http://scholarbank.nus.edu.sg/handle/10635/52809||ISSN:||10502947||DOI:||10.1103/PhysRevA.87.062121|
|Appears in Collections:||Staff Publications|
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