English

Multipartite nonlocality and random measurements

Quantum Physics 2017-07-07 v2

Abstract

We present an exhaustive numerical analysis of violations of local realism by families of multipartite quantum states. As an indicator of nonclassicality we employ the probability of violation for randomly sampled observables. Surprisingly, it rapidly increases with the number of parties or settings and even for relatively small values local realism is violated for almost all observables. We have observed this effect to be typical in the sense that it emerged for all investigated states including some with randomly drawn coefficients. We also present the probability of violation as a witness of genuine multipartite entanglement.

Keywords

Cite

@article{arxiv.1704.00346,
  title  = {Multipartite nonlocality and random measurements},
  author = {Anna de Rosier and Jacek Gruca and Fernando Parisio and Tamas Vertesi and Wieslaw Laskowski},
  journal= {arXiv preprint arXiv:1704.00346},
  year   = {2017}
}

Comments

8 pages, 2 figures, 3 tables, journal version

R2 v1 2026-06-22T19:05:00.270Z