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Entanglement dynamics of qubits in a common environment
An, Jun-Hong; Wang, Shun-Jin; Luo, Hong-Gang; An, JH , Lanzhou Univ, Dept Modern Phys, Lanzhou 730000, Peoples R China
2007
发表期刊PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
ISSN0378-4371
卷号382期号:2页码:753-764
摘要We use the quantum jump approach to study the entanglement dynamics of a quantum register, which is composed of two or three dipole-dipole coupled two-level atoms, interacting with a common environment. Our investigation of entanglement dynamics reflects that the environment has dual actions on the entanglement of the qubits in the model. While the environment destroys the entanglement induced by the coherent dipole-dipole interactions, it can produce stable entanglement between the qubits prepared initially in a separable state. The analysis shows that it is the entangled decoherence-free states contained as components in the initial state that contribute to the stable entanglement. Our study indicates how the environmental noise produces the entanglement and exposes the interplay of environmental noise and coherent interactions of qubits on the entanglement. ( C) 2007 Elsevier B.V. All rights reserved.
部门归属Lanzhou Univ, Dept Modern Phys, Lanzhou 730000, Peoples R China; Natl Cheng Kung Univ, Ctr Quantum Informat Sci, Tainan 70101, Taiwan; Sichuan Univ, Dept Phys, Chengdu 610064, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Systems State
学科领域Physics
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收录类别SCI
WOS记录号WOS:000248198800038
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被引频次:18[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5677
专题理论物理所1978-2010年知识产出
通讯作者An, JH , Lanzhou Univ, Dept Modern Phys, Lanzhou 730000, Peoples R China
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An, Jun-Hong,Wang, Shun-Jin,Luo, Hong-Gang,et al. Entanglement dynamics of qubits in a common environment[J]. PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS,2007,382(2):753-764.
APA An, Jun-Hong,Wang, Shun-Jin,Luo, Hong-Gang,&An, JH , Lanzhou Univ, Dept Modern Phys, Lanzhou 730000, Peoples R China.(2007).Entanglement dynamics of qubits in a common environment.PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS,382(2),753-764.
MLA An, Jun-Hong,et al."Entanglement dynamics of qubits in a common environment".PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS 382.2(2007):753-764.
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