论文标题
自旋偏振抗酸性激子极光龙边缘状态
Spin-polarized antichiral exciton-polariton edge states
论文作者
论文摘要
从理论上讲，我们考虑了在蜂窝晶格中排列的激子微柱系统的系统。自然当前的Te-TM分裂和交替的Zeeman拆分，不同的Sublattices经历了Zeeman分裂的对面，将能量的狄拉克点转移，从而引起了抗酸性行为。在具有锯齿形边缘的带状几何形状中，存在两对边状态并沿相同的方向传播（包括相反边缘的状态）。相反边缘的边缘模式具有相反的旋转（圆极化），这导致共同传播的“+ - ”自旋通道。抗病毒边缘状态受到非零绕组数的保护，并且可以在60度弯曲的情况下传播而不会反射。我们进一步将这些边缘状态的传输特性与手性边缘模式进行了比较，并提出了一种实验实现它们的方案。
We consider theoretically a system of exciton-polariton micropillars arranged in a honeycomb lattice. The naturally present TE-TM splitting and an alternating Zeeman splitting, where the different sublattices experience opposite Zeeman splitting, shifts the Dirac points in energy, giving rise to antichiral behavior. In a strip geometry having zigzag edges, two pairs of edge states exist and propagate in the same direction (including the states at the opposite edges). The edge modes localized at the opposite edges have opposite spins (circular polarizations), which leads to co-propagating "+-" spin channels. The antichiral edge states are protected by non-zero winding numbers and can propagate around a 60 degree bend without being reflected. We further compare the transport properties of these edge states with chiral edge modes and propose a scheme to realize them experimentally.
