论文标题
通过对称性破裂，在连续体和圆形呈圆形状态下的拓扑保护结合状态的产生和an灭
Generation and Annihilation of Topologically-Protected Bound States in the Continuum and Circularly-Polarized States by Symmetry Breaking
论文作者
论文摘要
我们通过打破$ c_ {6} $对称性，用于高阶AT- $γ$在连续体（BICS）中绑定的状态（BICS），并用拓扑费用$ -2 $的光子晶体中的$ -2 $ - （i）从AT-$γ$ BIC和（ii）的各种形式的coptry-ihimihiilation-ihiliration-ihiliration-ihiliration-ihility Processise off-$γ$ bics的确定性产生手。这些过程通过保存在惯性的拓扑费用上可以很好地解释，从而显示出这些现象的拓扑结实性。结果表明，对远场极化向量的拓扑方面的新控制。
We demonstrate by breaking the $C_{6}$ symmetry for higher-order at-$Γ$ bound states in the continuum (BICs) with topological charge $-2$ in photonic crystals, (i) deterministic generation of off-$Γ$ BICs from the at-$Γ$ BIC, and (ii) a variety of pair-creation and annihilation processes of circularly-polarized states with opposite topological charge and same handedness. These processes are well explained by the conservation of handedness-wise topological charges, showing topologically robustness of these phenomena. The results indicate a new control of topological aspect of far-field polarization vectors.
