TITLE:
A Sufficient Clarification of “Super-Quantum Correlations: A Necessary Clarification” by Pierre Uzan
AUTHORS:
Nicolas Courtemanche, Claude Crépeau
KEYWORDS:
Nonlocality, No-Signalling, Super-Quantum Correlations
JOURNAL NAME:
Journal of Quantum Information Science,
Vol.11 No.2,
June
18,
2021
ABSTRACT: In the paper “Super-Quantum Correlations: A Necessary Clarification” by Uzan [1], it is suggested that stronger than quantum (or supra-quantum) correlations are not possible. The main point of Uzan’s argumentation is the belief that the intuitive definition of No-Signalling (NS) is different from the statistical definition of No-Signalling (NSstat), and that situations exist where NSstat is respected while NS isn’t. In this paper we show why these definitions are one and the same, and where the example from the original paper breaks down. We provide a broader context to help the reader understand intuitively the situation.