Evaluating measures of nonclassical correlation in a multipartite quantum system
Akira SaiToh, Robabeh Rahimi, and Mikio Nakahara
TL;DR
This paper introduces and compares various measures of nonclassical correlation in multipartite quantum systems, based on the idea that such correlations exist when the system's density matrix lacks a product eigenbasis.
Contribution
It proposes new measures of nonclassical correlation and systematically compares them within the framework of quantum systems.
Findings
Different measures of nonclassical correlation are characterized and contrasted.
The measures are shown to detect nonclassical correlations effectively.
Insights into the structure of nonclassical correlations in multipartite systems are provided.
Abstract
We introduce and compare several measures of nonclassical correlation defined on the basis of a widely-recognized paradigm claiming that a multipartite system represented by a density matrix having no product eigenbasis possesses nonclassical correlation.
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