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Incompatible quantum measurements admitting a local hidden variable model

arXiv
Authors: Marco TĂșlio Quintino, Joseph Bowles, Flavien Hirsch, Nicolas Brunner

Year

2015

Paper ID

26544

Status

Preprint

Abstract Read

~2 min

Abstract Words

109

Citations

N/A

Abstract

The observation of quantum nonlocality, i.e. quantum correlations violating a Bell inequality, implies the use of incompatible local quantum measurements. Here we consider the converse question. That is, can any set of incompatible measurements be used in order to demonstrate Bell inequality violation? Our main result is to construct a local hidden variable model for an incompatible set of qubit measurements. Specifically, we show that if Alice uses this set of measurements, then for any possible shared entangled state, and any possible dichotomic measurements performed by Bob, the resulting statistics are local. This represents significant progress towards proving that measurement incompatibility does not imply Bell nonlocality in general.

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  • This paper contributes to the Quantum Foundations research area in the Quantum Articles archive.
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  • The observation of quantum nonlocality, i.e.

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