Eur. Phys. J. B 44, 359-364 (2005)
https://doi.org/10.1140/epjb/e2005-00134-3

Entanglement of two-qutrit system

Zhejiang Institute of Modern Physics, Zhejiang University, Hangzhou 310027, P.R. China

Corresponding author: ^a gqzhu@zimp.zju.edu.cn

Received: 28 June 2004
Revised: 12 January 2005
Published online: 28 April 2005

Abstract

In this paper, von Neumann entropy is used to study three kinds of bipartite qutrit model, which represent SU(3) strongly correlated model, three-level Lipkin-Meshkov-Glick model, and spin-1 model. The relation between the ground-state entanglement and the quantum phase transition in those models is exhibited and the connection between the entanglement extremes and the symmetries is also discussed.