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Xin, R; Song, Z; Sun, CP; Song, Z , Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China.
Engineering antiferromagnetic Heisenberg spin chains for maximizing of the groundstate entanglement
发表期刊PHYSICS LETTERS A
关键词Energy Levels Ladders Systems
摘要We study the correlation function and concurrence for the eigenstates with zero spin of engineered Heisenberg models to explore the entanglement property. It is shown that the total nearest neighbor (NN) correlation function of zero-spin eigenstates reaches its local extremum when the coupling strength is uniform, and correspondingly the groundstate entanglement of d-D cubic AF Heisenberg model is locally maximized. Moreover, numerical calculations for a N-site quantum spin ring with cosinusoidally modulated exchange coupling, i.e., J(i) = J(1 + cos(2 pi i/N)), indicate that the uniform coupling is not the unique optimal distribution for maximizing the groundstate entanglement and this modulation of interactions can induce the longer range entanglement. (c) 2005 Elsevier B.V. All rights reserved.
2005
ISSN0375-9601
卷号342期号:40910页码:30-35
学科领域Physics
收录类别SCI
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/13786
专题理论物理所科研产出_SCI论文
通讯作者Song, Z , Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China.
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GB/T 7714
Xin, R,Song, Z,Sun, CP,et al. Engineering antiferromagnetic Heisenberg spin chains for maximizing of the groundstate entanglement[J]. PHYSICS LETTERS A,2005,342(40910):30-35.
APA Xin, R,Song, Z,Sun, CP,&Song, Z , Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China..(2005).Engineering antiferromagnetic Heisenberg spin chains for maximizing of the groundstate entanglement.PHYSICS LETTERS A,342(40910),30-35.
MLA Xin, R,et al."Engineering antiferromagnetic Heisenberg spin chains for maximizing of the groundstate entanglement".PHYSICS LETTERS A 342.40910(2005):30-35.
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