We describe the effects of the crossing of the exciton levels in moiré quantum dots in an external magnetic field. We demonstrate that the unpolarized light can create significant dynamic valley polarization of interlayer excitons in the conditions where the Zeeman energy is much smaller than the thermal energy. The angular momentum is gained by the excitons from the nuclear spin fluctuations. In the $n$-type moiré quantum dots for the typical experimental parameters, the unpolarized light can lead to the complete valley polarization of the resident electrons.

中文翻译：

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莫尔量子点中的动态谷极化

我们描述了在外部磁场中莫尔量子点中激子能级交叉的影响。我们证明了在塞曼能量远小于热能的条件下，非偏振光可以产生显着的层间激子动态谷极化。角动量由来自核自旋波动的激子获得。在里面$n$型莫尔量子点对于典型的实验参数，非偏振光可以导致驻留电子的完全谷极化。