Quantum measurement incompatibility does not imply Bell nonlocality
Quantum Physics
2018-02-02 v2
Abstract
We discuss the connection between the incompatibility of quantum measurements, as captured by the notion of joint measurability, and the violation of Bell inequalities. Specifically, we present explicitly a given a set of non jointly measurable POVMs with the following property. Considering a bipartite Bell test where Alice uses , then for any possible shared entangled state and any set of (possibly infinitely many) POVMs performed by Bob, the resulting statistics admits a local model, and can thus never violate any Bell inequality. This shows that quantum measurement incompatibility does not imply Bell nonlocality in general.
Cite
@article{arxiv.1707.06960,
title = {Quantum measurement incompatibility does not imply Bell nonlocality},
author = {Flavien Hirsch and Marco Túlio Quintino and Nicolas Brunner},
journal= {arXiv preprint arXiv:1707.06960},
year = {2018}
}
Comments
See also arXiv:1705.10069 for a related work Small changes on the main text. Some typos were fixed