Characterizing Quantum Networks: Insights from Coherence Theory

TL;DR

This paper explores how quantum coherence theory can be used to analyze quantum networks, improving existing methods for understanding quantum correlations crucial for quantum information processing.

Contribution

It introduces enhancements to a covariance matrix-based approach for analyzing quantum network correlations using coherence theory.

Findings

Improved analytical evaluation of network correlation measures.

Demonstrated effectiveness of coherence theory in quantum network analysis.

Enhanced understanding of quantum correlations in entangled systems.

Abstract

Networks based on entangled quantum systems enable interesting applications in quantum information processing and the understanding of the resulting quantum correlations is essential for advancing the technology. We show that the theory of quantum coherence provides powerful tools for analyzing this problem. For that, we demonstrate that a recently proposed approach to network correlations based on covariance matrices can be improved and analytically evaluated for the most important cases.