Coherent Preservation of Two-Qubit Quantum Entanglement in the Strong Coupling Region
文献类型：期刊论文
| 作者 | Tian, GH ; Zhong, SQ |
| 刊名 | COMMUNICATIONS IN THEORETICAL PHYSICS
 |
| 出版日期 | 2014 |
| 卷号 | 62期号:5页码:721-728 |
| 关键词 | N-ATOM SYSTEM RADIATION |
| ISSN号 | 0253-6102 |
| 通讯作者 | Tian, GH (reprint author), Beijing Univ Posts & Telecommun, Sch Sci, Beijing 100876, Peoples R China. |
| 英文摘要 | The entanglement of two qubits is investigated in the range of their ultra-strongly coupling with a quantum oscillator. The two qubits are initially in four Bell states and they are under the control mechanism of the coherent state of the quantum oscillator. There are four parameters: the average number of the coherent state, the ultra-strong coupling strength, the ratio of two frequencies of qubit and oscillator, and the inter-interaction coupling of the two qubits in the mechanism, and they all are influential parameters on the entanglement of the two qubits. One Bell state vertical bar I-0 > is easyily kept and is trivial case. The novel results show that there is one state vertical bar I-0 > among the other three Bell states which the entanglement of the two qubits could be almost completely preserved. The possibility is made into reality by the appropriate choice of the four influential parameters. We give two different schemes to choose the respective parameters to maintain the entanglment of vertical bar I-0 > almost undiminished. The results will be useful for the quantum information process. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| 资助信息 | Major State Basic Research Development Program of China (973 Program) [2010CB923202]; National Natural Science of China [10875018] |
| 语种 | 英语 |
| WOS记录号 | WOS:000347465000016 |
| 公开日期 | 2015-06-03 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/15584]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Tian, GH,Zhong, SQ. Coherent Preservation of Two-Qubit Quantum Entanglement in the Strong Coupling Region[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2014,62(5):721-728. |
| APA | Tian, GH,&Zhong, SQ.(2014).Coherent Preservation of Two-Qubit Quantum Entanglement in the Strong Coupling Region.COMMUNICATIONS IN THEORETICAL PHYSICS,62(5),721-728. |
| MLA | Tian, GH,et al."Coherent Preservation of Two-Qubit Quantum Entanglement in the Strong Coupling Region".COMMUNICATIONS IN THEORETICAL PHYSICS 62.5(2014):721-728. |
入库方式： OAI收割
来源：理论物理研究所
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