Controllable Amplification of Entanglement for Two Qutrits under Decoherence

被引：4
作者：
Zheng Qiang [1 ]
Xie Xiao-Yao [1 ]
Zhi Qi-Jun [2 ]
Ren Zhong-Zhou [3 ]
机构：
[1] Guizhou Normal Univ, Sch Math & Comp Sci, Guiyang 550001, Peoples R China
[2] Guizhou Normal Univ, Sch Phys & Elect, Guiyang 550001, Peoples R China
[3] Nanjing Univ, Sch Phys, Nanjing 210093, Peoples R China
来源：
COMMUNICATIONS IN THEORETICAL PHYSICS | 2011年 / 55卷 / 04期
基金：
中国国家自然科学基金;
关键词：
entanglement; DM interaction; qutrit; decoherence; THERMAL ENTANGLEMENT; HEISENBERG CHAIN; SUDDEN-DEATH; QUANTUM; STATE;
D O I：
10.1088/0253-6102/55/4/07
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Entanglement dynamics of a two-qutrit Heisenberg spin chain with the external magnetic fields and DM interaction under the intrinsic decoherence is investigated. Depending on whether there is inhomogeneous magnetic field, the entanglement amplification, i.e. the phenomenon that the finally stable entanglement is bigger than that of the initial one, is found for one kind of initial states. The reasons for the controllable entanglement amplification are discussed.
引用
收藏
页码：569 / 572
页数：4
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