Dynamics of Entanglement for a Two-Parameter Class of States in a Qubit-Qutrit System  

作　　者：魏海瑞 任宝藏 李涛 华明 邓富国 

机构地区：[1]Department of Physics,Applied Optics Beijing Area Major Laboratory,Beijing Normal University

出　　处：《Communications in Theoretical Physics》2012年第6期983-990,共8页理论物理通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos. 10974020 and 11174039,NCET-11-0031;the Fundamental Research Funds for the Central Universities

摘　　要：We investigate the dynamics of entanglement for a two-parameter class of states in a hybrid qubit-qutrit system under the influence of various dissipative channels. Our results show that entanglement sudden death （ESD） is a general phenomenon and it usually takes place in a qubit-qutrit system interacting with various noisy channels, not only the ease with dephasing and depolarizing channels observed by others. ESD can only be avoided for some initially entangled states under some particular noisy channels. Moreover, the environment affects the entanglement and the coherence of the system in very different ways.

关 键 词：dynamics of entanglement qubit-qutrit systems a two-parameter class of states dissipative channels entanglement sudden death 

分 类 号：O413.1[理学—理论物理]