| Non-Markovianity of the Heisenberg XY spin environment with Dzyaloshinskii–Moriya interaction |
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| 引用本文： | 项俊东,秦立国,田立君.Non-Markovianity of the Heisenberg XY spin environment with Dzyaloshinskii–Moriya interaction[J].中国物理 B,2014(11):184-189. |
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| 作者姓名： | 项俊东 秦立国 田立君 |
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| 作者单位： | Department of Physics, Shanghai University;Shanghai Advanced Research Institute, Chinese Academy of Sciences |
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| 基金项目： | Project supported by the National Natural Science Foundation of China （Grant Nos. 11075101 and 11275119）. |
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| 摘 要： | Using the effective non-Markovian measure proposed by Breuer et al. recently, we study the memory effect of a central qubit system coupled to a spin chain environment with Dzyaloshinskii-Moriya interaction in a transverse field. It is discovered that the central qubit system presents different memory effects in different environment phases with the different oscillatory behaviors of the decoherence factor. Moreover, it is revealed that the Dzyaloshinskii-Moriya interaction has a prominent influence on the memory effect of a central qubit system via modifying the amplitude and period of the decoherence factor under certain conditions.
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| 关 键 词： | 环境 海森堡 记忆效应 相互作用 非马尔科夫 量子位 振荡行为 退相干 |
Non-Markovianity of the Heisenberg .XY spin environment with Dzy aloshinskii-M oriy a interaction |
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| Institution: | [1]Department of Physics, Shanghai University, Shanghai 200444, China; [2]Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China |
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| Abstract: | non-Markovinity, qubit dynamics, spin chain |
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| Keywords: | non-Markovinity qubit dynamics spin chain |
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