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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
Source PublicationSCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY
KeywordQuantum Chains Entanglement State
AbstractThe 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
Volume51Issue:1Pages:45-55
Subject AreaPhysics
Indexed BySCI
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5606
Collection理论物理所科研产出_SCI论文
Corresponding AuthorYang, S , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
Recommended Citation
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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