English

Violation of Bell inequalities for multipartite systems

Quantum Physics 2017-05-16 v2 Mathematical Physics math.MP

Abstract

In recent papers, the theory of representations of finite groups has been proposed to analyzing the violation of Bell inequalities. In this paper, we apply this method to more complicated cases. For two partite system, Alice and Bob each make one of dd possible measurements, each measurement has nn outcomes. The Bell inequalities based on the choice of two orbits are derived. The classical bound is only dependent on the number of measurements dd, but the quantum bound is dependent both on nn and dd. Even so, when dd is large enough, the quantum bound is only dependent on dd. The subset of probabilities for four parties based on the choice of six orbits under group action is derived and its violation is described. Restricting the six orbits to three parties by forgetting the last party, and guaranteeing the classical bound invariant, the Bell inequality based on the choice of four orbits is derived. Moreover, all the corresponding nonlocal games are analyzed.

Keywords

Cite

@article{arxiv.1705.00513,
  title  = {Violation of Bell inequalities for multipartite systems},
  author = {Yanmin Yang and Zhu-Jun Zheng},
  journal= {arXiv preprint arXiv:1705.00513},
  year   = {2017}
}

Comments

The name of our paper is changed. 1 figures is added. And some typos are fixed. 15 pages, 4 figures