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Many-body effects of a two-dimensional electron gas on trion-polaritons

机译:二维电子气对三重极化子的多体效应

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We theoretically investigate the trion-polariton and the effects of a two-dimensional electron gas on its single-particle properties. Focusing on the trion and exciton transitions, we set up an effective model and calculate the optical absorption of the quantum well containing the two-dimensional electron gas (2DEG). Including the light-matter coupling, we compute the Rabi splitting and polariton line shapes as a function of 2DEG density. The role of finite temperature is investigated. The spatial extent of the trion-polariton is also calculated. We find a substantial charge buildup at short distances as long as the Rabi frequency does not exceed the trion binding energy. All our calculations take into account the Fermi edge singularity and the Anderson orthogonality catastrophe.
机译:我们从理论上研究了Trion极化子和二维电子气对其单粒子性质的影响。着眼于三重子和激子跃迁,我们建立了一个有效的模型,并计算了包含二维电子气(2DEG)的量子阱的光吸收。包括光-质耦合,我们计算Rabi分裂和极化子线形状作为2DEG密度的函数。研究了有限温度的作用。还计算了三极极化子的空间范围。只要拉比频率不超过三重子束缚能,我们就会在短距离内发现大量电荷积累。我们所有的计算都考虑了费米边缘奇异性和安德森正交性突变。

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