Quantum discord and multipartite correlations

Autor:	Okrasa, Małgorzata, Walczak, Zbigniew
Rok vydání:	2011
Předmět:	Quantum Physics Condensed Matter - Statistical Mechanics Mathematical Physics
Zdroj:	EPL, 96 (2011) 60003
Druh dokumentu:	Working Paper
DOI:	10.1209/0295-5075/96/60003
Popis:	Recently, it was realized that quantum discord can be seen as the minimal amount of correlations which are lost when some local quantum operations are performed. Based on this formulation of quantum discord, we provide a systematical analysis of quantum and classical correlations present in both bipartite and multipartite quantum systems. As a natural result of this analysis, we introduce a new measure of the overall quantum correlations which is lower bounded by quantum discord. Comment: 7 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1101.6057 Zobrazit plný text záznamu View this record from Arxiv