| 半导体单量子点增益与吸收特性的研究 |
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| 引用本文： | 赵顺才,刘正东,廖庆洪.半导体单量子点增益与吸收特性的研究[J].量子电子学报,2008,25(3):276-281. |
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| 作者姓名： | 赵顺才 刘正东 廖庆洪 |
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| 作者单位： | 南昌大学近代物理研究所,纳米技术工程研究中心,江西南昌,330047 |
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| 摘 要： | 采用密度矩阵的方法进行数值模拟计算紧束缚态的半导体单量子点的增益与吸收行为.其动力学数值结果显示,在某些不同时刻的增益谷和吸收峰的左右分布保持不变对称性,且有上下镜像反转的现象发生;在在长时间演化中发现该量子点系统的增益与吸收发生激烈的振荡而呈现出了量子光学中典型的崩塌与复苏的有趣物理现象.
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| 关 键 词： | 量子光学 半导体量子点 增益与吸收 崩塌与复苏现象 |
| 文章编号： | 1007-5461(2008)03-0276-06 |
| 收稿时间： | 2007/11/7 |
| 修稿时间： | 2007年11月7日 |
Investigation of a single semiconductor quantum dot's absorption and gain properties |
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| ZHAO Shun-cai,LIU Zheng-dong,LIAO Qing-hong.Investigation of a single semiconductor quantum dot''''s absorption and gain properties[J].Chinese Journal of Quantum Electronics,2008,25(3):276-281. |
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| Authors: | ZHAO Shun-cai LIU Zheng-dong LIAO Qing-hong |
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| Institution: | ZHA O Shun-cai LIU Zheng-dong LIA O Qing-hong Institute of Modern Physics,Engineering Research Center for Nanotechnology,Nanchang University,Nanchang 330047,China |
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| Abstract: | The density matrix approach was employed to investigate analytically the absorption/gain be- havior in a semiconductor quantum dot under the strong confinement regime.The numerical results show the distribution symmetry of the gain trough and absorption crest remains the same at some different time, and the phenomena of mirror reflection occurs.However,during the evolution duration the long time ab- sorption/gain behavior of the quantum dot system oscillates furiously and a typical interesting quantum optic... |
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| Keywords: | quantum optics semiconductor quantum dot absorption and gain collapse-revival phenomena |
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