| 量子点-腔系统耦合强度对非相干抽运的响应 |
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| 引用本文： | 陈翔,米贤武.量子点-腔系统耦合强度对非相干抽运的响应[J].激光与光电子学进展,2011(6). |
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| 作者姓名： | 陈翔 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(10647132); 湖南省教育厅资助科研项目(10A100)资助课题 |
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| 摘 要： | 用量子主方程理论研究了量子点-腔耦合系统。为了说明理论模型,分析了一个量子点微柱腔强耦合(SC)实验。经研究发现耦合系统在稳态时抽运产生一个新的强耦合标准,抽运可以抑制或者增强强耦合;腔发射谱双峰结构并不是强耦合的明确特征,它还依赖于非相干抽运。研究表明,强耦合经常出现变相的单峰而弱耦合(WC)出现双峰结构与系统所控制的参数值密切相关。激子抽运增加时,腔发射谱由双峰逐渐变成增宽的单峰最后变成窄的单峰;腔衰减率增加时,均为双峰结构的腔发射光谱经历了从强耦合到弱耦合的转变。量子点腔失谐系统有效耦合强度与非相干抽运密切相关。
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| 关 键 词： | 量子光学 强耦合 非相干抽运 腔发射谱 有效耦合强度 |
Response of Coupling Strength of Quantum Dot-Cavity System to Incoherent Pump |
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| Chen Xiang Mi Xianwu.Response of Coupling Strength of Quantum Dot-Cavity System to Incoherent Pump[J].Laser & Optoelectronics Progress,2011(6). |
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| Authors: | Chen Xiang Mi Xianwu |
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| Affiliation: | Chen Xiang Mi Xianwu(College of Physics Science and Information Engineering,Jishou University,Jishou,Hunan 416000,China) |
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| Abstract: | Quantum dot-cavity coupling systems is investigated by using quantum master equation.In order to illustrate theory mode,we analyze a strong coupling(SC) experiment in quantum dot-microcavity system.After studying,we find that the pump in the coupling system yieds new criteria to achieve SC with a steady state,where the incoherent pump hinders or favors SC.Double-peak structure of cavity-emitted spectrum is not an unequivocal signature of strong coupling,which dependes on the incoherent pump.Research shows t... |
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| Keywords: | quantum optics strong coupling incoherent pump cavity-emitted spectrum effective coupling strength |
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