Effect of decoherence from a spin environment on the entanglement dynamics of two-qutrit states  

作　　者：MA XiaoSan REN MingFan ZHAO GuangXing WANG AnMin 

机构地区：[1]School of Electric Engineering and Information, Anhui University of Technology, Ma'anshan 243002, China [2]Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2011年第10期1833-1838,共6页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 10947115, 10975125 and 11004001)

摘　　要：The entanglement dynamics of a two-qutrit system under decoherence from a spin environment is investigated by using negativityas entanglement measure. Our results imply that the entanglement evolution depends not only on the coupling strength and thetunneling elements of the environment but also on the number of the freedom degrees and the initial state of the environment.The entanglement dynamics of a two-qutrit system under decoherence from a spin environment is investigated by using negativityas entanglement measure. Our results imply that the entanglement evolution depends not only on the coupling strength and thetunneling elements of the environment but also on the number of the freedom degrees and the initial state of the environment.

关 键 词：entanglement dynamics quantum decoherence a spin environment 

分 类 号：O313[理学—一般力学与力学基础] O413[理学—力学]