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Transport of Neutral Optical Excitations Using Electric Fields

机译:使用电场运输中性光学激发

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Mobile quantum impurities interacting with a fermionic bath form quasiparticles known as Fermi polarons. We demonstrate that a force applied to the bath particles can generate a drag force of similar magnitude acting on the impurities, realizing a novel, nonperturbative Coulomb drag effect. To prove this, we calculate the fully self-consistent, frequency-dependent transconductivity at zero temperature in the Baym-Kadanoff conserving approximation. We apply our theory to excitons and exciton polaritons interacting with a bath of charge carriers in a doped semiconductor embedded in a microcavity. In external electric and magnetic fields, the drag effect enables electrical control of excitons and may pave the way for the implementation of gauge fields for excitons and polaritons. Moreover, a reciprocal effect may facilitate optical manipulation of electron transport. Our findings establish transport measurements as a novel, powerful tool for probing the many-body physics of mobile quantum impurities.
机译:流动量子杂质与拟米基粒子相互作用,称为费米极化。我们证明施加到浴颗粒的力可以产生在杂质上作用的类似幅度的拖曳力,实现新颖的非培训库拖动效应。为了证明这一点,我们计算ZEAM-KADANOFF保守近似下零温度的完全自我一致的频率相关的跨导。我们将我们的理论应用于激子和激子极性官,与嵌入微腔中的掺杂半导体中的电荷载体相互作用。在外部电气和磁场中,拖动效果使电气控制能够为激子和极性源的仪表铺平仪表。此外,互易效应可以促进电子传输的光学操纵。我们的研究结果建立了运输测量作为一种新颖的,强大的工具,用于探测移动量子杂质的多体物理。

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