English

Quantifying Bell nonlocality of a pure two-qudit state via its entanglement

Quantum Physics 2023-08-17 v2

Abstract

For the maximal violation of all Bell inequalities by an arbitrary pure two-qudit state of any dimension, we derive a new lower bound expressed via the concurrence of this pure state. This new lower bound and the upper bound on the maximal Bell violation, found in [J. Phys. A: Math. Theor. 55, 285301 (2022)] and also expressed via the concurrence, analytically quantify Bell nonlocality of a pure two-qudit state via its entanglement, in particular, prove explicitly that entanglement of a pure two-qudit state is necessary and sufficient for its Bell nonlocality. By re-visiting the pure two-qubit case, we also find and rigorously prove the new results on the correlation properties of an arbitrary pure two-qubit state.

Keywords

Cite

@article{arxiv.2303.16794,
  title  = {Quantifying Bell nonlocality of a pure two-qudit state via its entanglement},
  author = {Elena R. Loubenets and Sergey Kuznetsov and Louis Hanotel},
  journal= {arXiv preprint arXiv:2303.16794},
  year   = {2023}
}

Comments

Improved version, 12 pp