Author(s)

Nicolas Courtemanche, Claude Crépeau

School of Computer Science, McGill University, Montréal, Québec, Canada.

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 (NS_stat), and that situations exist where NS_stat 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.

Nonlocality, No-Signalling, Super-Quantum Correlations

Courtemanche, N. and Crépeau, C. (2021) A Sufficient Clarification of “Super-Quantum Correlations: A Necessary Clarification” by Pierre Uzan. Journal of Quantum Information Science, 11, 65-70. doi: 10.4236/jqis.2021.112005.