Complementary correlations and entanglement distribution

TL;DR

This paper explores how complementary correlations relate to quantum entanglement and discord, providing conditions for entanglement distribution using separable Bell diagonal states, thus deepening understanding of quantum correlations.

Contribution

It establishes a link between complementary correlations and other quantum correlations, and offers a necessary and sufficient condition for entanglement distribution with specific states.

Findings

Complementary correlations can equal entanglement and discord for certain states.

A necessary and sufficient condition for entanglement distribution with separable Bell diagonal states is provided.

The study enhances understanding of the role of complementary correlations in quantum information processing.

Abstract

Complementary correlations can reveal the genuine quantum correlations present in a composite quantum system. Here we investigate the relation between complementary correlations and other aspects of genuine quantum correlations. We show that for a certain class of states quantum correlations revealed through complementary correlations become equal to entanglement and discord. We also provide a necessary and sufficient condition for entanglement distribution with separable Bell diagonal states in terms of complementary correlations.