Couplers for Non-Locality Swapping
Quantum Physics
2009-07-15 v2
Abstract
Studying generalized non-local theories brings insight to the foundations of quantum mechanics. Here we focus on non-locality swapping, the analogue of quantum entanglement swapping. In order to implement such a protocol, one needs a coupler that performs the equivalent of quantum joint measurements on generalized `box-like' states. Establishing a connection to Bell inequalities, we define consistent couplers for theories containing an arbitrary amount of non-locality, which leads us to introduce the concepts of perfect and minimal couplers. Remarkably, Tsirelson's bound for quantum non-locality naturally appears in our study.
Cite
@article{arxiv.0812.0758,
title = {Couplers for Non-Locality Swapping},
author = {Paul Skrzypczyk and Nicolas Brunner},
journal= {arXiv preprint arXiv:0812.0758},
year = {2009}
}
Comments
16 pages, 3 figures