论文标题
具有定期调制有效量规场的合成拓扑绝缘子
Synthetic topological insulator with periodically modulated effective gauge fields
论文作者
论文摘要
我们在理论上和数值上都在合成光子晶格中的拓扑边缘状态具有有限的周期性规格电位。通过替代和定期定制该相的有效量规场，最终导致在一维合成晶格的两个边界处导致对称的总反射。进一步调整最近的邻居耦合各向异性，拓扑边缘状态出现在两个边界处。我们的工作提供了一种研究与合成光子晶格的一维耦合波导阵列的拓扑物理学的新方法。
We study both theoretically and numerically the topological edge states in synthetic photonic lattice with finitely periodic gauge potentials. The effective gauge fields are implemented by tailoring the phase alternatively and periodically, which finally results in symmetric total reflection at two boundaries of the one-dimensional synthetic lattice. Further tuning the nearest-neighbor coupling anisotropically, topological edge states occur at the two boundaries. Our work provides a new way to study the topological physics of one-dimensional coupled waveguide arrays with synthetic photonic lattice.
