suddendeathbirthandstableentanglementinatwoqubitheisenbergxyspinchain
文献类型：期刊论文
| 作者 | SHAN ChuanJia1; CHENG WeiWen1; LIU TangKun1; LIU JiBing1; WEI Hua2 |
| 刊名 | chinesephysicsletters
 |
| 出版日期 | 2008 |
| 卷号 | 25期号:9页码:3115 |
| ISSN号 | 0256-307X |
| 英文摘要 | Taking the decoherence effect due to population relaxation into account, we investigate the entanglement properties for two qubits in the Heisenberg XY interaction and subject to an external magnetic field. It is found that the phenomenon of entanglement sudden death ( ESD) as well as sudden birth ( ESB) appear during the evolution process for particular initial states. The influence of the external magnetic field and the spin environment on ESD and ESB are addressed in detail. It is shown that the concurrence, a measure of entanglement, can be controlled by tuning the parameters of the spin chain, such as the anisotropic parameter, external magnetic field, and the coupling strength with their environment. In particular, we find that a critical anisotropy constant exists, above which ESB vanishes while ESD appears. It is also notable that stable entanglement, which is independent of different initial states of the qubits, occurs even in the presence of decoherence. |
| 资助项目 | [Key Higher Education Programme of Hubei Province] ; [Natural Science Foundation of Hubei Province] ; [Postgraduate Programme of Hubei Normal University] |
| 语种 | 英语 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/16997]  |
| 专题 | 中国科学院武汉物理与数学研究所 |
| 作者单位 | 1.湖北师范大学 2.中国科学院武汉物理与数学研究所 |
| 推荐引用方式 GB/T 7714 | SHAN ChuanJia,CHENG WeiWen,LIU TangKun,et al. suddendeathbirthandstableentanglementinatwoqubitheisenbergxyspinchain[J]. chinesephysicsletters,2008,25(9):3115. |
| APA | SHAN ChuanJia,CHENG WeiWen,LIU TangKun,LIU JiBing,&WEI Hua.(2008).suddendeathbirthandstableentanglementinatwoqubitheisenbergxyspinchain.chinesephysicsletters,25(9),3115. |
| MLA | SHAN ChuanJia,et al."suddendeathbirthandstableentanglementinatwoqubitheisenbergxyspinchain".chinesephysicsletters 25.9(2008):3115. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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