Dephasing of triplet-sideband optical emission of a resonantly driven InAs/GaAs quantum dot inside a microcavity.
Dephasing of triplet-sideband optical emission of a resonantly driven InAs/GaAs quantum dot inside a microcavity.
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DOI：
10.1103/physrevlett.106.247402
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发表时间：
2011-03
影响因子：
8.6
通讯作者：
S. M. Ulrich;S. Ateş;S. Reitzenstein;A. Löffler;A. Forchel;P. Michler
中科院分区：
文献类型：
--
作者：
S. M. Ulrich;S. Ateş;S. Reitzenstein;A. Löffler;A. Forchel;P. Michler
详细研究了微柱腔中单个量子点的共振荧光特性，特别关注了光驱动场功率和失谐量对发射相干性的影响。一个功率依赖的系列在很宽的范围内揭示了特征的Mollow三重态光谱与大拉比分裂的|Ω| ≤15 GHz。特别地，在Mollow边带的系统光谱展宽<$Ω（2）方面的退相效应被观察为激发诱导的退相的强指纹。我们的结果与最近提出的一个模型在腔QED制度的声子修饰的量子点Mollow三重态发射的预测非常一致。
Detailed properties of resonance fluorescence from a single quantum dot in a micropillar cavity are investigated, with particular focus on emission coherence in the dependence on optical driving field power and detuning. A power-dependent series over a wide range reveals characteristic Mollow triplet spectra with large Rabi splittings of |Ω|≤15 GHz. In particular, the effect of dephasing in terms of systematic spectral broadening ∝Ω(2) of the Mollow sidebands is observed as a strong fingerprint of excitation-induced dephasing. Our results are in excellent agreement with predictions of a recently presented model on phonon-dressed quantum dot Mollow triplet emission in the cavity-QED regime.