论文标题
相干拓扑激光
Coherent topological polariton laser
论文作者
论文摘要
为了成功地描述不受散射或混乱影响的强大边缘模式的出现，拓扑概念已应用于广泛的领域。在光子学中，观察到来自具有改善总体激光特征的拓扑保护模式的激光指示。在这里，我们研究了以一维的su-schrieffer-heeger晶格排列的激子微腔陷阱，并形成了拓扑缺陷模式，我们明确地观察到高度相干的极性激光。此外，我们通过施加外部磁场来确认对极化激光的激子贡献。这些系统的实验发现和较高的时间连贯性通过广义的Gross-Pitaevskii模型和Lindblad Master方程模型的组合精心复制。因此，通过使用相对简单的SSH几何形状，我们能够描述和控制激子 - 孔子拓扑激光，从而更深入地了解对微叠剂的拓扑作用。
Topological concepts have been applied to a wide range of fields in order to successfully describe the emergence of robust edge modes that are unaffected by scattering or disorder. In photonics, indications of lasing from topologically protected modes with improved overall laser characteristics were observed. Here, we study exciton-polariton microcavity traps that are arranged in a one-dimensional Su-Schrieffer-Heeger lattice and form a topological defect mode from which we unequivocally observe highly coherent polariton lasing. Additionally, we confirm the excitonic contribution to the polariton lasing by applying an external magnetic field. These systematic experimental findings of robust lasing and high temporal coherence are meticulously reproduced by a combination of a generalized Gross-Pitaevskii model and a Lindblad master equation model. Thus, by using the comparatively simple SSH geometry, we are able to describe and control the exciton-polariton topological lasing, allowing for a deeper understanding of topological effects on microlasers.
