Quantum vortices are the quantized version of classical vortices. Their center is a phase singularity or vortex core around which the flow of particles as a whole circulates and is typical in superfluids, condensates and optical fields. However, the exploration of the motion of the phase singularities in coherently-coupled systems is still underway. We theoretically analyze the propagation of an interference dislocation in the regime of strong coupling between light and matter, with strong mass imbalance, corresponding to the case of microcavity exciton–polaritons. To this end, we utilize combinations of vortex and tightly focused Gaussian beams, which are introduced through resonant pulsed pumping. We show that a dislocation originates from self-interference fringes, due to the non-parabolic dispersion of polaritons combined with moving Rabi-oscillating vortices. The morphology of singularities is analyzed in the Poincaré space for the pseudospin associated to the polariton states. The resulting beam carries orbital angular momentum with decaying oscillations due to the loss of spatial overlap between the normal modes of the polariton system.

中文翻译：

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拓扑驱动的拉比振荡干涉位错

量子涡旋是经典涡旋的量化版本。它们的中心是一个相位奇点或涡核，粒子流作为一个整体围绕它循环，在超流体、冷凝物和光场中是典型的。然而，相干耦合系统中相位奇点运动的探索仍在进行中。我们从理论上分析了干涉位错在光与物质之间的强耦合状态下的传播，具有严重的质量不平衡，对应于微腔激子 - 极化子的情况。为此，我们利用涡旋和紧密聚焦的高斯光束的组合，它们是通过共振脉冲泵浦引入的。我们证明位错源于自干涉条纹，由于极化子的非抛物线色散与移动的拉比振荡涡旋相结合。奇点的形态在 Poincaré 空间中分析了与极化子态相关的赝自旋。由于极化子系统的正常模式之间的空间重叠损失，产生的光束携带具有衰减振荡的轨道角动量。