Quantum-state transfer via the ferromagnetic chain in a spatially modulated field

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	Quantum-state transfer via the ferromagnetic chain in a spatially modulated field
	Sun, CP; Shi, T; Li, Y; Song, Z; Shi, T , Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China.
刊名	PHYSICAL REVIEW A
	2005
卷号	71 期号:3 页码:-
ISSN号	1050-2947
英文摘要	We show that a perfect quantum-state transmission can be realized through a spin chain possessing the commensurate structure of an energy spectrum, which is matched with the corresponding parity. As an exposition of the mirror inversion symmetry discovered by Albanese (e-print quant-ph/0405029), the parity matched commensurability of the energy spectra helps us to present preengineered spin systems for quantum information transmission. Based on these theoretical analyses, we propose a protocol of near-perfect quantum-state transfer by using a ferromagnetic Heisenberg chain with uniform coupling constant, but an external parabolic magnetic field. The numerical results show that the initial Gaussian wave packet in this system with optimal field distribution can be reshaped near perfectly over a longer distance.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000228632100024
公开日期	2012-08-30
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/13868]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Shi, T , Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China.
推荐引用方式 GB/T 7714	Sun, CP,Shi, T,Li, Y,et al. Quantum-state transfer via the ferromagnetic chain in a spatially modulated field[J]. PHYSICAL REVIEW A,2005,71(3):-.
APA	Sun, CP,Shi, T,Li, Y,Song, Z,&Shi, T , Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China..(2005).Quantum-state transfer via the ferromagnetic chain in a spatially modulated field.PHYSICAL REVIEW A,71(3),-.
MLA	Sun, CP,et al."Quantum-state transfer via the ferromagnetic chain in a spatially modulated field".PHYSICAL REVIEW A 71.3(2005):-.