ITP OpenIR  > 理论物理所科研产出  > SCI论文
Tian, GH; Zhong, SQ; Tian, GH (reprint author), Beijing Univ Posts & Telecommun, Sch Sci, Beijing 100876, Peoples R China.
Coherent Preservation of Two-Qubit Quantum Entanglement in the Strong Coupling Region
发表期刊COMMUNICATIONS IN THEORETICAL PHYSICS
语种英语
关键词N-atom System Radiation
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.
2014
ISSN0253-6102
卷号62期号:5页码:721-728
学科领域Physics
收录类别SCI
项目资助者Major State Basic Research Development Program of China (973 Program) [2010CB923202]; National Natural Science of China [10875018] ; Major State Basic Research Development Program of China (973 Program) [2010CB923202]; National Natural Science of China [10875018] ; Major State Basic Research Development Program of China (973 Program) [2010CB923202]; National Natural Science of China [10875018] ; Major State Basic Research Development Program of China (973 Program) [2010CB923202]; National Natural Science of China [10875018]
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15584
专题理论物理所科研产出_SCI论文
通讯作者Tian, GH (reprint author), Beijing Univ Posts & Telecommun, Sch Sci, Beijing 100876, Peoples R China.
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GB/T 7714
Tian, GH,Zhong, SQ,Tian, GH . 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,&Tian, GH .(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.
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