Coherence distribution in multipartite systems

TL;DR

This paper investigates how coherence is distributed in multipartite quantum systems, exploring trade-offs with discord and the dynamics of coherence during entanglement distribution.

Contribution

It introduces a framework for analyzing coherence distribution and trade-offs in multipartite systems, extending previous bipartite results to more complex settings.

Findings

Distribution of total coherence into discord and dissonance analyzed

Trade-off relations between coherence and discord established

Coherence change during entanglement distribution studied

Abstract

This paper examines the coherence in multipartite systems. We first discuss the distribution of total coherence in a given multipartite quantum state into discord between subsystems and coherent dissonance in each individual subsystem, using the relative entropy as a distance measure. Then we give some trade-off relations between various types of coherence and discord within a bipartite system,and extend these results to the multipartite setting. Finally, the change of coherence in entanglement distribution is studied.