AI 中文总结
研究利用多轨道相互作用诱导的AB囚禁效应创建全平带晶格系统，提出弗洛凯驱动协议控制局域光子态动力学，实现紧凑态平移及传播方向控制，发现行波态的手性对及相关拓扑不变量。
AI 中文摘要
阿哈罗诺夫-玻姆（AB）效应仍然是基础物理和应用物理的基石。在这项工作中，我们利用多轨道相互作用诱导的有效磁场产生的AB囚禁效应，创建了一个全平带（FB）晶格系统。通常，FB态在空间上是紧凑的且尾部为零；因此，它们在线性环境中的移动性通常被认为是不可能的。我们提出了一种全FB光子系统中的弗洛凯驱动协议，以完全控制局域光子态的动力学。哈密顿量沿传播坐标的调制允许紧凑态在相长干涉方向上平移，产生有效的频闪量子行走效应。我们发现行波态以手性对存在，并且具有等于+1或-1的相关拓扑不变量（缠绕数），其符号决定传播方向。我们使用飞秒激光写入的光子波导实验实现了弗洛凯驱动协议，并证明了由输入条件的相对相位决定的传播方向控制。
英文摘要
The Aharonov-Bohm (AB) effect remains a cornerstone of fundamental and applied physics. In this work, we utilize the AB caging effect originated from an effective magnetic field induced by multiorbital interactions, creating an all flat band (FB) lattice system. Normally, FB states are known for being compact in space and having a zero tail; therefore, their mobility in a linear environment is generally understood as impossible. We propose a Floquet driving protocol in an all-FB photonic system to fully control the dynamics of localized photonic states. The modulation of the Hamiltonian along the propagation coordinate allows the translation of compact states in the direction of constructive interference, resulting in an effective stroboscopic quantum walk-like effect. We find that the traveling states exist in chiral pairs. We experimentally implement the Floquet driven protocol using femtosecond laser written photonic waveguides and demonstrate directional control of the propagation, determined by the relative phase of the input condition.
Comments8 pages, 3 figures
