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Li, Y; Shi, T; Chen, B; Song, Z; Sun, CP; Li, Y , Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China.
Quantum-state transmission via a spin ladder as a robust data bus
Source PublicationPHYSICAL REVIEW A
KeywordCoupled Heisenberg-chains Hubbard-model Computation Information Systems
AbstractWe explore the physical mechanism to coherently transfer the quantum information of spin by connecting two spins to an isotropic antiferromagnetic spin ladder system as data bus. Due to a large spin gap existing in such a perfect medium, the effective Hamiltonian of the two connected spins can be archived as that of Heisenberg type, which possesses a ground state with maximal entanglement. We show that the effective coupling strength is inversely proportional to the distance of the two spins and thus the quantum information can be transferred between the two spins separated by a longer distance, i.e., the characteristic time of quantum-state transferring linearly depends on the distance.
2005
ISSN1050-2947
Volume71Issue:2Pages:-
Subject AreaPhysics
Indexed BySCI
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/13886
Collection理论物理所科研产出_SCI论文
Corresponding AuthorLi, Y , Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China.
Recommended Citation
GB/T 7714
Li, Y,Shi, T,Chen, B,et al. Quantum-state transmission via a spin ladder as a robust data bus[J]. PHYSICAL REVIEW A,2005,71(2):-.
APA Li, Y,Shi, T,Chen, B,Song, Z,Sun, CP,&Li, Y , Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China..(2005).Quantum-state transmission via a spin ladder as a robust data bus.PHYSICAL REVIEW A,71(2),-.
MLA Li, Y,et al."Quantum-state transmission via a spin ladder as a robust data bus".PHYSICAL REVIEW A 71.2(2005):-.
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