| 利用回音壁微腔系统克服量子点能级自然分裂 |
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| 引用本文： | 柏江湘,李德俊,米贤武. 利用回音壁微腔系统克服量子点能级自然分裂[J]. 中国科学:物理学 力学 天文学, 2011, 0(7): 824-831 |
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| 作者姓名： | 柏江湘 李德俊 米贤武 |
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| 作者单位： | 吉首大学物理科学与信息工程学院; |
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| 基金项目： | 国家自然科学基金(批准号:10647132); 湖南省教育厅科学(编号:09C825,10A100)资助项目 |
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| 摘 要： | 用一种全量子理论方法研究了一回音壁微腔-V型三能级量子点系统之间的耦合.量子点分别由基态、左圆极化激子态和右圆极化激子态构成,两简并回音壁腔模分别与左激子跃迁模和右激子跃迁模相耦合,其耦合率分别为gL和gR.在实空间里,我们推导了透射模与反射模的精确解,并得出其数值结果.结果显示了复合系统的耦合动力学特性;更重要的是,我们可以通过设计微腔得到合适的微腔反向散射率?,利用双模与量子点强耦合,就可以克服双激子能级精细结构的分裂(FSS).
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| 关 键 词： | 回音壁微腔 双激子量子点 模耦合 精细结构分裂 |
Whispering-gallery-cavity-assisted overcoming the fine structure splitting of the quantum dot |
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| BAI JiangXiang,LI DeJun MI XianWu College of Physics Science , Information Engineering,Jishou University,Jishou ,China. Whispering-gallery-cavity-assisted overcoming the fine structure splitting of the quantum dot[J]. SCIENCE CHINA Physics, Mechanics & Astronomy, 2011, 0(7): 824-831 |
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| Authors: | BAI JiangXiang LI DeJun MI XianWu College of Physics Science Information Engineering Jishou University Jishou China |
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| Affiliation: | BAI JiangXiang,LI DeJun MI XianWu College of Physics Science and Information Engineering,Jishou University,Jishou 416000,China |
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| Abstract: | A composite system is investigated by a full quantum approach,two orthogonal degenerate whispering-gallery cavity modes coupling to a quantum dot(QD).The energy levels of the QD are modeled by a three-level system consisting of the ground state,right-and left-polarized excitons.The counterclockwise mode and the clockwise mode are coupled with the transitions with respect to right-and left-polarized excitons,respectively.We analyze the photon transport of the composite system,describing the coupling between ... |
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| Keywords: | whispering-gallery-cavity quantum dot mode coupling fine structure splitting |
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