论文标题
激发仪的集体激发在合成规场中的凝结
Collective excitations of exciton-polariton condensates in a synthetic gauge field
论文作者
论文摘要
量子玻色子冷凝物的集体（基本）激发，包括半导体微腔中激子极化子的冷凝物，是粒子间相互作用的敏感探针。在各向异性微腔内具有动量依赖性的光学模式的TM分裂，预测激发分散体是强烈的各向异性的，这是腔的合成磁性标准场的结果，以及单相互作用的互动强度以及单型旋转型之间的相互作用和三型的互动型。在这里，通过直接测量集体激发在高密度的光学捕获激子 - 波利顿冷凝物中的分散，我们观察到了与旋转旋转极性激发的理论预测的极好的一致性。我们提取旋转和旋转极性相互作用常数，并在激子极性子的相互作用的纺纱液中绘制出特征性的旋转纹理。
Collective (elementary) excitations of quantum bosonic condensates, including condensates of exciton polaritons in semiconductor microcavities, are a sensitive probe of interparticle interactions. In anisotropic microcavities with momentum-dependent TE-TM splitting of the optical modes, the excitations dispersions are predicted to be strongly anisotropic, which is a consequence of the synthetic magnetic gauge field of the cavity, as well as the interplay between different interaction strengths for polaritons in the singlet and triplet spin configurations. Here, by directly measuring the dispersion of the collective excitations in a high-density optically trapped exciton-polariton condensate, we observe excellent agreement with the theoretical predictions for spinor polariton excitations. We extract the inter- and intra-spin polariton interaction constants and map out the characteristic spin textures in an interacting spinor condensate of exciton polaritons.
