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柱形量子点中量子比特的消相干时间

Decoherence Time of Qubit in Cylindrical Quantum Dot
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摘要 通过求解柱形量子点的能量本征方程,得到极化子的基态和第一激发态的本征能量以及本征波函数,进而根据基态和第一激发态构造一个量子比特。数值计算讨论了消相干时间与色散系数、电子-体纵光学声子耦合强度、柱形量子点的半径及柱高的变化关系。 The eigen energy and eigen function of the ground state and the first excited state of the polaron in cylindrical quantum dot were obtained by precisely solving the Schrdinger equation.A qubit was formed by overlying both the ground state and the first excited state.Numerical results indicate that decoherence time changes with coefficient of dispersion,electron-LOphonon coupling strength,the radius and height of cylindrical quantum dot.
作者 姜福仕 李岩
机构地区 内蒙古民族大学物理与电子信息学院 大连理工大学材料科学与工程学院 辽阳市第一高级中学
出处 《固体电子学研究与进展》 CAS CSCD 北大核心 2015年第4期317-320,共4页 Research & Progress of SSE
基金 国家自然科学基金资助项目(11464033 11464034) 内蒙古民族大科学研究基金资助项目(NMDYB1447)
关键词 柱形量子点 量子比特 极化子 消相干 cylindrical quantum dot qubit polaron decoherence
分类号 O471.3 [理学—半导体物理] O472.3 [理学—半导体物理]
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参考文献13

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固体电子学研究与进展
2015年 第4期

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