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Yang Shuo; Song Zhi; Sun ChangPu; Yang, S , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
Dynamic generation of entangling wave packets in XY spin system with decaying long-range couplings
发表期刊SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY
关键词Quantum Chains Entanglement State
摘要The dynamic generation of spin entanglement between two distant sites in a XY model with 1/r(2) decay long-range couplings was studied. Due to the linear dispersion relation epsilon(k)similar to|k| of magnons in such a model, a well-located spin state can be dynamically split into two moving entangled local wave packets without changing their shapes. Interestingly, when such two wave packets meet at the diametrically opposite site after the fast period tau = N pi/J, the initial well-located state is completely recurrent. Numerical calculation was performed to confirm the analytical result even if the ring system of sizes N up to several thousands is considered. The truncation approximation for the coupling strengths was also studied. Numerical simulation shows that the above conclusions still hold even if the range of the coupling strength is truncated to a relatively short scale compared with the size of the spin system.
2008
ISSN1672-1799
卷号51期号:1页码:45-55
学科领域Physics
收录类别SCI
引用统计
被引频次:7[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/311006/5606
专题理论物理所科研产出_SCI论文
通讯作者Yang, S , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
推荐引用方式
GB/T 7714
Yang Shuo,Song Zhi,Sun ChangPu,et al. Dynamic generation of entangling wave packets in XY spin system with decaying long-range couplings[J]. SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY,2008,51(1):45-55.
APA Yang Shuo,Song Zhi,Sun ChangPu,&Yang, S , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.(2008).Dynamic generation of entangling wave packets in XY spin system with decaying long-range couplings.SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY,51(1),45-55.
MLA Yang Shuo,et al."Dynamic generation of entangling wave packets in XY spin system with decaying long-range couplings".SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY 51.1(2008):45-55.
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