非线性光流体中时间周期涡旋团的自发形成
Spontaneous formation of time-periodic vortex cluster in nonlinear fluids of light
摘要：
我们证明了自发形成的非线性涡团簇态的微腔激子极化激元凝聚体的时间周期符号翻转的拓扑电荷在GHz的规模。当用环形非共振激光光泵浦时，被捕获的凝聚体经历复杂的高阶模竞争并断裂成两个不同的陷阱能级。由此产生的模式干涉导致强大的凝聚密度拍定期出现有序排列的相位奇点。我们的工作开辟了新的视角，创造结构自由演变的光，和奇异光学在强光物质耦合制度。
英文摘要：
We demonstrate spontaneous formation of a nonlinear vortex cluster state in a microcavity exciton-polariton condensate with time-periodic sign flipping of its topological charges at the GHz scale. When optically pumped with a ring-shaped nonresonant laser, the trapped condensate experiences intricate high-order mode competition and fractures into two distinct trap levels. The resulting mode interference leads to robust condensate density beatings with periodic appearance of orderly arranged phase singularities. Our work opens new perspectives on creating structured free-evolving light, and singular optics in the strong light-matter coupling regime.
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