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Effects of intrinsic decoherence on various correlations and quantum dense coding in a two superconducting charge qubit system |
Wang Fei (王飞), Maimaitiyiming-Tusun (麦麦提依明·吐孙), Parouke-Paerhati (帕肉克·帕尔哈提), Ahmad-Abliz (艾合买提·阿不力孜) |
School of Physics and Electronic Engineering, Xinjiang Normal University, Urumchi 830054, China |
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Abstract The influence of intrinsic decoherence on various correlations and dense coding in a model which consists of two identical superconducting charge qubits coupled by a fixed capacitor is investigated. The results show that, despite the intrinsic decoherence, the correlations as well as the dense coding channel capacity can be effectively increased via the combination of system parameters, i.e., the mutual coupling energy between the two charge qubits is larger than the Josephson energy of the qubit. The bigger the difference between them is, the better the effect is.
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Received: 13 March 2015
Revised: 03 May 2015
Accepted manuscript online:
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PACS:
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03.67.Hk
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(Quantum communication)
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05.30.-d
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(Quantum statistical mechanics)
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74.50.+r
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(Tunneling phenomena; Josephson effects)
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Fund: Project supported by the Project to Develop Outstanding Young Scientific Talents of China (Grant No. 2013711019), the Natural Science Foundation of Xinjiang Province, China (Grant No. 2012211A052), the Foundation for Key Program of Ministry of Education of China (Grant No. 212193), and the Innovative Foundation for Graduate Students Granted by the Key Subjects of Theoretical Physics of Xinjiang Province, China (Grant No. LLWLL201301). |
Corresponding Authors:
Ahmad-Abliz
E-mail: aahmad@126.com
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Cite this article:
Wang Fei (王飞), Maimaitiyiming-Tusun (麦麦提依明·吐孙), Parouke-Paerhati (帕肉克·帕尔哈提), Ahmad-Abliz (艾合买提·阿不力孜) Effects of intrinsic decoherence on various correlations and quantum dense coding in a two superconducting charge qubit system 2015 Chin. Phys. B 24 090307
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