Information causality from an entropic and a probabilistic perspective
Abstract
The information causality principle is a generalisation of the no-signalling principle which implies some of the known restrictions on quantum correlations. But despite its clear physical motivation, information causality is formulated in terms of a rather specialised game and figure of merit. We explore different perspectives on information causality, discussing the probability of success as the figure of merit, a relation between information causality and the non-local `inner-product game', and the derivation of a quadratic bound for these games. We then examine an entropic formulation of information causality with which one can obtain the same results, arguably in a simpler fashion.
Cite
@article{arxiv.1107.4031,
title = {Information causality from an entropic and a probabilistic perspective},
author = {Sabri W. Al-Safi and Anthony J. Short},
journal= {arXiv preprint arXiv:1107.4031},
year = {2013}
}
Comments
7 pages, v2: some references added and minor improvements