Coherence distribution in multipartite systems. (14th September 2018)

• Record Type: Journal Article
• Authors: Xi, Zhengjun
• Is Part Of: Journal of physics. Volume 51:Number 41(2018)
• Publication Date: 2018-09-14
• Subjects: coherence distribution -- quantum correlations -- quantum coherence; Mathematical physics -- Periodicals; Statistical physics -- Periodicals; Quantum theory -- Periodicals; Matter -- Properties -- Periodicals; 530.105
• DOI: 10.1088/1751-8121/aabb23
• Languages: English
• ISSNs: 1751-8113

Abstract

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.