Monogamy relations of entropic non-contextual inequalities and their experimental realization

TL;DR

This paper introduces a graph-theoretic framework to analyze monogamous relationships of entropic non-contextuality inequalities, providing theoretical conditions and experimental validation using NMR quantum information processing.

Contribution

It develops a novel graph-based approach to identify monogamous properties of entropic inequalities and demonstrates their experimental realization on an NMR platform.

Findings

Entropic Bell-CHSH inequalities exhibit monogamy in tripartite systems.

Theoretical conditions for monogamy of ENC inequalities are established.

Experimental validation confirms the monogamous nature of these inequalities.

Abstract

We develop a theoretical framework based on a graph theoretic approach to analyze monogamous relationships of entropic non-contextuality (ENC) inequalities. While ENC inequalities are important in quantum information theory and are well studied, theoretical as well as experimental demonstration of their monogamous nature is still elusive. We provide conditions for ENC inequalities to exhibit a monogamous relationship and derive the same for general scenarios. We show that two entropic versions of the Bell-CHSH inequality acting on a tripartite scenario exhibit a monogamous relationship, for which we provide a theoretical proof as well as an experimental validation on an NMR quantum information processor. Our experimental technique to evaluate entropies has been designed to obtain information about entropies via measurement of only the expectation values of observables.