  We propose a simple simulation of nonlocal quantum correlations among $N$
qubits using a local hidden variable source with a positive probability
distribution, given that each the $N$ observers has access to a local negative
bit. Notably, unlike the Toner-Bacon protocol, no exchange of classical bits
between the observers is required. Moreover, our simulation can be extended to
include Popescu-Rohrlich box correlations.

Quantum Physics