[1]李延标,秦 猛,王 晓,等.不同方向缺陷磁场对量子自旋体系纠缠和信息传输的影响[J].南京师大学报(自然科学版),2015,38(02):38.
　Li Yanbiao,Qin Meng,Wang Xiao,et al.Effects of Different Defect Magnetic Fields on Entanglement and Information Transmission in Quantum Spin Systems[J].Journal of Nanjing Normal University(Natural Science Edition),2015,38(02):38.
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不同方向缺陷磁场对量子自旋体系纠缠和信息传输的影响()
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《南京师大学报》（自然科学版）[ISSN:1001-4616/CN:32-1239/N]

卷:
第38卷
期数:
2015年02期
页码:
38
栏目:
物理学
出版日期:
2015-06-30

文章信息/Info

Title:
Effects of Different Defect Magnetic Fields on Entanglement and Information Transmission in Quantum Spin Systems
作者:
李延标1; 秦 猛1; 2; 王 晓1; 刘翠翠1; 王必利1
(1.中国人民解放军理工大学理学院,江苏 南京 211101) (2.南京大学物理学院,江苏 南京 210093)
Author(s):
Li Yanbiao1; Qin Meng1; 2; Wang Xiao1; Liu Cuicui1; Wang Bili1
(1.Institute of Science,PLA University of Science and Technology,Nanjing 211101,China) (2.Department of Physics,Nanjing University,Nanjing 210093,China)
关键词:
量子通讯; 量子纠缠; 保真度
Keywords:
quantum communications; quantum entanglement; fidelity
分类号:
O431.1
文献标志码:
A
摘要:
为了提高信息传输的保真度,研究了缺陷磁场对自旋系统中纠缠和保真度的作用,讨论了不同方向缺陷磁场、温度、各向异性作用对纠缠和量子通讯的影响. 研究发现,由z方向的磁场诱导的纠缠一般较x方向磁场诱导的纠缠大. z方向磁场和x方向磁场对保真度的影响具有竞争作用,反铁磁系统更适合于信息的传输. [关键词] 量子通讯,量子纠缠,保真度
Abstract:
In order to enhance the fidelity in quantum communications,we investigate the effects of different defect magnetic field on the entanglement and information transmission in a quantum spin model. We discuss the effects of different defect magnetic field,temperature and anisotropy interaction on the entanglement and quantum communication. The results show that the entanglement in z-direction is stronger than x-direction. There is competition relation between the two different magnetic fields. We also find that the antiferromagnetic system is more proper for information transmission.

参考文献/References:

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相似文献/References:

[1]刘小贤,钟鸣,陈波.具有三自旋相互作用的横场中各向异性XY模型的协作参量[J].南京师大学报(自然科学版),2012,35(04):25.
　Liu Xiaoxian,Zhong Ming,Chen Bo.Concurrence of Anisotropic XY Chains With Three-Site Interactions[J].Journal of Nanjing Normal University(Natural Science Edition),2012,35(02):25.
[2]翟孝月.在横场中(1/2,1)混合自旋各向异性XY模型的量子纠缠[J].南京师大学报(自然科学版),2006,29(04):32.
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备注/Memo

备注/Memo:
收稿日期:2014-05-02.
基金项目:中国人民解放军理工大学预研基金.
通讯联系人:李延标,副教授,研究方向:量子信息. E-mail:liyanbiao@yeah. Net
更新日期/Last Update: 2015-06-30