English

Quantum correlations require multipartite information principles

Quantum Physics 2012-01-16 v2

Abstract

Identifying which correlations among distant observers are possible within our current description of Nature, based on quantum mechanics, is a fundamental problem in Physics. Recently, information concepts have been proposed as the key ingredient to characterize the set of quantum correlations. Novel information principles, such as, information causality or non-trivial communication complexity, have been introduced in this context and successfully applied to some concrete scenarios. We show in this work a fundamental limitation of this approach: no principle based on bipartite information concepts is able to single out the set of quantum correlations for an arbitrary number of parties. Our results reflect the intricate structure of quantum correlations and imply that new and intrinsically multipartite information concepts are needed for their full understanding.

Keywords

Cite

@article{arxiv.1107.3738,
  title  = {Quantum correlations require multipartite information principles},
  author = {Rodrigo Gallego and Lars Erik Würflinger and Antonio Acín and Miguel Navascués},
  journal= {arXiv preprint arXiv:1107.3738},
  year   = {2012}
}

Comments

Appendix added

R2 v1 2026-06-21T18:38:54.948Z