Post-quantum nonlocality in the minimal triangle scenario

Understand

We investigate network nonlocality in the triangle scenario when all three parties have no input and binary outputs.

• Through an explicit example, we prove that this minimal scenario supports nonlocal correlations compatible with no-signaling and independence of the three sources, but not with realisations based on independent quantum or classical sources.
• This nonlocality is robust to noise.
• Moreover, we identify the equivalent to a Popescu-Rohrlich box in the minimal triangle scenario.