标题： 自加速拓扑光子学 显示英文标题

标题： Self-accelerating Topological Photonics

摘要： 在具有畴壁的复合反演对称性破缺光子石墨烯晶格中，预测了线性和非线性的自加速谷霍尔边缘态。 通过将有限能量的Airy包络叠加到谷霍尔边缘态上获得的线性态表现出自加速、非衍射和自愈特性，其加速轨迹并非严格的抛物线。 对于表现出良好自加速和非衍射特性的非线性态，其可能改变谷霍尔边缘态的运动方向，它是通过将从包络方程中获得的自陷自加速包络叠加到谷霍尔边缘态上构建的。 非线性自加速谷霍尔边缘态可以在不发生背向散射的情况下绕过尖锐拐角，但由于拓扑保护和自加速需求对振荡尾部长度的要求相反，因此无法完全阻止辐射进入体态。 这些结果展示了通过自加速波操控拓扑边缘态的可能性，并为自加速拓扑光子学铺平了道路。 显示英文摘要

摘要： Both linear and nonlinear self-accelerating valley Hall edge states are predicted in the composited inversion-symmetry-broken photonic graphene lattice with a domain wall. The linear one that is obtained by superimposing a finite-energy Airy envelope to the valley Hall edge state shows self-accelerating, non-diffracting and self-healing properties, with the accelerating trajectory not exactly a parabola. For the nonlinear one which exhibits well self-accelerating and non-diffracting properties that may turn over the moving direction of the valley Hall edge state, it is constructed by superimposing the self-trapped self-accelerating envelope that is obtained from the envelope equation to the valley Hall edge state. The nonlinear self-accelerating valley Hall edge state can circumvent sharp corners without back-scattering, but it is impossible to completely prohibit radiating into the bulk because the topological protection and the self-accelerating demand contrary length of the oscillating tail. The results exhibit the possibility on manipulating topological edge states via self-accelerating waves, and pave the way for the self-accelerating topological photonics.