| Decoherence of elliptical states in phase space |
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| 作者姓名： | 王月媛 刘正君 廖庆洪 王继成 刘树田 |
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| 作者单位： | Department of Physics,Harbin Institute of Technology Key Laboratory for Advanced Functional Materials and Excited State Process of Heilongjiang Province,School of Physics and Electronic Engineering,Harbin Normal University |
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| 基金项目： | Project supported by the National Basic Research Program of China (Grant No. 2011CB301801) and the National Natural Science Foundation of China (Grant No. 10974039). |
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| 摘 要： | The effects of decoherence on elliptical states which concern the quantum superposition of N coherent states on an ellipse in the α plane are studied.The characteristic decoherence times are determined.The evolutions of the Wigner functions associated with these states are investigated theoretically and the losses of nonclassicality as a result of decoherence are discussed.The result shows that the decoherence of elliptical states is slower than circular states relying on the number of coherent states and the amplitude,and the constructed states have a higher resilience to losses.
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| 关 键 词： | elliptical states Wigner distribution function decoherence |
Decoherence of elliptical states in phase space |
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| Wang Yue-Yuan,Liu Zheng-Jun,Liao Qing-Hong,Wang Ji-Cheng and Liu Shu-Tian.Decoherence of elliptical states in phase space[J].Chinese Physics B,2011,20(5):6-11. |
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| Authors: | Wang Yue-Yuan Liu Zheng-Jun Liao Qing-Hong Wang Ji-Cheng and Liu Shu-Tian |
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| Institution: | Department of Physics, Harbin Institute of Technology, Harbin 150001, China;Key Laboratory for Advanced Functional Materials and Excited State Process of Heilongjiang Province,School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, China;Department of Physics, Harbin Institute of Technology, Harbin 150001, China;Department of Physics, Harbin Institute of Technology, Harbin 150001, China;Department of Physics, Harbin Institute of Technology, Harbin 150001, China;Department of Physics, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | elliptical states, Wigner distribution function, decohercnce |
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| Keywords: | elliptical states Wigner distribution function decoherence |
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