info:eu-repo/semantics/article
Characterization of nonsignaling correlations from mutual information
Fecha
2021-06-17Registro en:
Perito, Ignacio; Bellomo, Guido; Galicer, Daniel Eric; Figueira, Santiago; Roncaglia, Augusto Jose; et al.; Characterization of nonsignaling correlations from mutual information; American Physical Society; Physical Review A: Atomic, Molecular and Optical Physics; 103; 6; 17-6-2021; 1-9
2469-9926
2469-9934
CONICET Digital
CONICET
Autor
Perito, Ignacio
Bellomo, Guido
Galicer, Daniel Eric
Figueira, Santiago
Roncaglia, Augusto Jose
Bendersky, Ariel Martin
Resumen
We present a characterization of the set of nonsignaling correlations in terms of a two-dimensional representation that involves the maximal value of a Bell functional and the mutual information between the parties. In particular, we apply this representation to the bipartite Bell scenario with two measurements and two outcomes. In terms of these physically meaningful quantities and through numerical optimization methods and some analytical results, we investigate the frontier between the different subsets of the nonsignaling correlations, focusing on the quantum and postquantum ones. Our analysis exhibits that there is a trade-off between the amount of classical correlations existing between the parties and the magnitude of the violation of a given Bell inequality. Notably, the Tsirelson bound appears as a singular point of this trade-off without resorting to quantum mechanics.