English

Sampling quantum nonlocal correlations with high probability

Quantum Physics 2016-11-11 v2 Functional Analysis Probability

Abstract

It is well known that quantum correlations for bipartite dichotomic measurements are those of the form γ=(ui,vj)i,j=1n\gamma=(\langle u_i,v_j\rangle)_{i,j=1}^n, where the vectors uiu_i and vjv_j are in the unit ball of a real Hilbert space. In this work we study the probability of the nonlocal nature of these correlations as a function of α=mn\alpha=\frac{m}{n}, where the previous vectors are sampled according to the Haar measure in the unit sphere of Rm\mathbb R^m. In particular, we prove the existence of an α0>0\alpha_0>0 such that if αα0\alpha\leq \alpha_0, γ\gamma is nonlocal with probability tending to 11 as nn\rightarrow \infty, while for α>2\alpha> 2, γ\gamma is local with probability tending to 11 as nn\rightarrow \infty.

Keywords

Cite

@article{arxiv.1412.4010,
  title  = {Sampling quantum nonlocal correlations with high probability},
  author = {Carlos E. González-Guillén and C. Hugo Jiménez and Carlos Palazuelos and Ignacio Villanueva},
  journal= {arXiv preprint arXiv:1412.4010},
  year   = {2016}
}

Comments

v2: minor modifications to match the journal version, 16 pages, 0 figures

R2 v1 2026-06-22T07:29:14.352Z