论文标题
在同心环势中的北极凝结物的结构共同和反流动电流
Structuring co- and counter-flowing currents of polariton condensates in concentric ring-shaped potentials
论文作者
论文摘要
我们研究了加载到同心环形电位中的微腔极化凝结物的当前流动。不同电势环之间冷凝水的隧穿导致不同的相锁状态，具体取决于电势环的分离。结果，不同环中的冷凝水电流可以沿相同或相反的方向流动，具体取决于环形电位的特定构型。在两个同心标准的环形电势中，冷凝水总是以相同的方向循环（共同流动电流），并且在两个环中形成的涡流具有相同的拓扑电荷，因为它们的相位差异具有方位角均匀的分布。在这种情况下，增加潜在环的数量可以激发贝塞尔样溶液。如果将两个环形电势设计成眼形，内环为标准环形，外环是椭圆形的，则沿椭圆的主要和较小轴的两个环中的冷凝物的相位差异可能相反，这会产生逆转冷凝液。
We investigate the current flow of microcavity polariton condensates loaded into concentric ring-shaped potentials. The tunneling of the condensates between different potential rings results in different phase-locked states, depending on the separation of the potential rings. As a consequence, the condensate currents in different rings can flow either in the same or opposite direction depending on the specific configuration of the ring-shaped potentials. In two concentric standard ring-shaped potentials, the condensates always circulate in the same direction (co-flowing current) and the vortices formed in the two rings share the same topological charge because of the azimuthally uniform distribution of their phase difference. In this case, increasing the number of the potential rings enables the excitation of Bessel-like solutions. If the two ring-shaped potentials are engineered into an eye shape with the inner ring being standard ring-shaped and the outer ring being elliptically ring-shaped, the phase differences of the condensates in the two rings along the major and minor axes of the ellipse can be opposite, which gives rise to a counter-flowing condensate currents.
