Dai Tianxiang, Ma Anqi, Mao Jun, Ao Yutian, Jia Xinyu, Zheng Yun, Zhai Chonghao, Yang Yan, Li Zhihua, Tang Bo, Luo Jun, Zhang Baile, Hu Xiaoyong, Gong Qihuang, Wang Jianwei
State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing, China.
Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, Singapore.
Nat Mater. 2024 Jul;23(7):928-936. doi: 10.1038/s41563-024-01904-1. Epub 2024 May 22.
Controlling topological phases of light allows the observation of abundant topological phenomena and the development of robust photonic devices. The prospect of more sophisticated control with topological photonic devices for practical implementations requires high-level programmability. Here we demonstrate a fully programmable topological photonic chip with large-scale integration of silicon photonic nanocircuits and microresonators. Photonic artificial atoms and their interactions in our compound system can be individually addressed and controlled, allowing the arbitrary adjustment of structural parameters and geometrical configurations for the observation of dynamic topological phase transitions and diverse photonic topological insulators. Individual programming of artificial atoms on the generic chip enables the comprehensive statistical characterization of topological robustness against relatively weak disorders, and counterintuitive topological Anderson phase transitions induced by strong disorders. This generic topological photonic chip can be rapidly reprogrammed to implement multifunctionalities, providing a flexible and versatile platform for applications across fundamental science and topological technologies.
控制光的拓扑相可实现丰富拓扑现象的观测以及稳健光子器件的开发。对于实际应用而言，利用拓扑光子器件进行更复杂控制的前景需要高级可编程性。在此，我们展示了一种具有大规模集成硅光子纳米电路和微谐振器的全可编程拓扑光子芯片。在我们的复合系统中，光子人工原子及其相互作用能够被单独寻址和控制，从而可对结构参数和几何构型进行任意调整，以观测动态拓扑相变和多样的光子拓扑绝缘体。通用芯片上人工原子的单独编程能够针对相对较弱的无序对拓扑稳健性进行全面的统计表征，以及对由强无序诱导的反直觉拓扑安德森相变进行表征。这种通用拓扑光子芯片能够快速重新编程以实现多种功能，为基础科学和拓扑技术的应用提供了一个灵活且通用的平台。
