Multistability of cavity exciton polaritons affected by the thermally generated exciton reservoir
Multistability of cavity exciton polaritons affected by the thermally generated exciton reservoir
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热生成激子库影响空腔激子极化子的多稳定性
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
G. Malpuech
中科院分区：
文献类型：
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作者：
D. Vishnevsky;D. Solnyshkov;N. Gippius;G. Malpuech
到目前为止，在准共振泵浦下腔极化激元系统中激子库的产生一直被忽略。我们表明，在微腔具有小拉比分裂（通常是GaAs腔与单量子阱），这个水库可以有效地填充极化声子-声子散射。我们考虑了激子库对共振泵浦极化激元模能量移动的影响。我们发现，这个水库的存在有效地降低了极化激元-极化激元相互作用的自旋各向异性，与最近的实验测量，其中腔极化激元的多稳定性进行了分析
Until now, the generation of an excitonic reservoir in a cavity polariton system under quasi-resonant pumping has always been neglected. We show that in microcavities having a small Rabi splitting (typically GaAs cavities with a single quantum well), this reservoir can be efficiently populated by polariton-phonon scattering. We consider the influence of the exciton reservoir on the energy shifts of the resonantly pumped polariton modes. We show that the presence of this reservoir effectively reduces the spin anisotropy of the polariton-polariton interaction, in agreement with recent experimental measurements, where the multistability of cavity polaritons has been analyzed