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arXiv 0902.1410cond-mat.mes-hallcond-mat.mtrl-sci
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微腔中极化激元-极化激元散射的微观理论

Polariton-polariton scattering in microcavities: A microscopic theory

M. M. Glazov, H. Ouerdane, L. Pilozzi, G. Malpuech, A. V. Kavokin, A. D'Andrea

摘要:

本文将复合玻色子的费米子对易技术应用于半导体平面微腔中的极化激元-极化激元散射。派生以简单和物理透明的方式呈现。用正交化初、终态双激子波函数的方法计算了有效散射矩阵元和散射率。我们展示了如何玻色子刺激的散射出现在这个完整的费米子的方法,其等效的玻色子化方法,从而证明了在该制度的低激子密度。我们发现一个额外的贡献极化激元极化激元散射由于激子振子强度饱和,我们分析以及。我们提出了一个极化激元-极化激元散射的理论与相反的自旋取向,并表明,这种散射过程主要是通过暗激子态。给出了有效散射振幅的解析估计。

英文摘要:

We apply the fermion commutation technique for composite bosons to polariton-polariton scattering in semiconductor planar microcavities. Derivations are presented in a simple and physically transparent fashion. A procedure of orthogonolization of the initial and final two-exciton state wavefunctions is used to calculate the effective scattering matrix elements and the scattering rates. We show how the bosonic stimulation of the scattering appears in this full fermionic approach whose equivalence to the bosonization method is thus demonstrated in the regime of low exciton density. We find an additional contribution to polariton-polariton scattering due to the exciton oscillator strength saturation, which we analyze as well. We present a theory of the polariton-polariton scattering with opposite spin orientations and show that this scattering process takes place mainly via dark excitonic states. Analytical estimations of the effective scattering amplitudes are given.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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