Distillability sudden death in a two qutrit systems under a thermal reservoir

作     者：黄江 方卯发 杨百元 刘翔 

作者机构：Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Educationand Department of PhysicsHunan Normal University 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2012年第21卷第8期

页      面：241-245页

核心收录：

学科分类：07[理学] 070201[理学-理论物理] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China (Grant No. 11074072) 

主　　题：distillability entanglement distillability sudden death realignment criterion 

摘      要：The dynamics of distillability entanglement between qutrit-qutrit systems interacting with a thermal reservoir is investigated in this paper. We discovered an interesting phenomenon that under a thermal reservoir certain initially prepared free=entangled states become bound-entangled states in a finite time, which is called distillability sudden death （DSD）. We use a realignment criterion to measure the nine-dimensional density matrix of the entanglement. Moreover, we analyze some other parameters to investigate the effects to the systems. Explanations are then given.