论文标题
光子合成有效磁场中激子 - 波利顿冷凝物的自旋极化
Spin polarization of exciton-polariton condensate in a photonic synthetic effective magnetic field
论文作者
论文摘要
我们研究了局部激子 - 果龙冷凝物的自旋极化。我们证明存在有效的磁场，导致形成椭圆极化的冷凝物。我们表明，这个合成场具有完全光子的起源，我们认为这对于基于CDTE的微腔是独一无二的。此外，具有磁离子样品中局部偏振子冷凝物的自旋极化程度取决于非共振激发激光的激发能力或极化。在外部磁场中，半磁性冷凝水自发地构成了强旋转极化。基于在存在磁离子的情况下冷凝物的磁场行为，我们采用了一个模型，该模型使我们能够估算CDTE-System中的Polariton-Polariton相互作用强度至大约。 0.8 $μ\ text {ev} \！\ cdot \！μ\ text {m}^2 $。
We investigate the spin polarization of localized exciton-polariton condensates. We demonstrate the presence of an effective magnetic field leading to the formation of elliptically polarized condensates. We show that this synthetic field has an entirely photonic origin, which we believe is unique for the CdTe-based microcavities. Moreover, the degree of spin polarization of localized polariton condensates in samples with magnetic ions depends on the excitation power or polarization of the non-resonant excitation laser. In an external magnetic field, the semimagnetic condensate spontaneously builds up strong spin polarization. Based on the magnetic field behavior of the condensate in the presence of magnetic ions, we apply a model that allows us to estimate the polariton-polariton interaction strength in a CdTe-system to approx. 0.8 $μ\text{eV}\!\cdot\!μ\text{m}^2$.
