Simulations of quantum nonlocality with local negative bits

TL;DR

This paper introduces a novel local simulation method for quantum nonlocal correlations among multiple qubits using negative bits, avoiding classical communication and extending to super-quantum correlations.

Contribution

It presents a new local hidden variable model employing negative bits to simulate quantum nonlocality without classical communication, extending to Popescu-Rohrlich box correlations.

Findings

Successfully simulates quantum correlations with local negative bits

Eliminates the need for classical communication in the simulation

Extends to super-quantum Popescu-Rohrlich correlations

Abstract

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.