发表机构
University of Michigan; Department of Nuclear Engineering, University of Michigan（密歇根大学; 密歇根大学核工程系）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文提出费米极化子极化激元，通过多体相互作用与光子对称性结合，实现大带隙及电可逆拓扑，为可编程拓扑光子学提供新平台。
AI 中文摘要
拓扑极化激元为设计光学陈数带提供了一条途径，但由于半导体极化激元系统中时间反演对称性的破缺通常受限于较弱的塞曼分裂，实现大带隙或高效电调谐仍然具有挑战性。在此，我们展示了一种拓扑玻色-费米混合物——费米极化子极化激元——其中大带隙和电可逆拓扑源于费米极化子多体相互作用、光子对称性以及强光-物质耦合的相互作用。通过将栅控单层过渡金属硫族化物与对称性工程化的光子晶体集成，我们制备了具有拓扑带结构的费米极化子极化激元。带拓扑与栅极可调多体相互作用的直接耦合提供了一种超越裸塞曼分裂的放大时间反演对称性破缺机制，并实现了拓扑带隙、贝里曲率和陈数的电学反转。这些结果建立了一个电可重构的平台，用于相互作用驱动的拓扑态和可编程拓扑光子学。
英文摘要
Topological polaritons provide a route to engineer optical Chern bands, but realizing large gaps or efficient electrical tunability remains challenging because time-reversal-symmetry breaking in semiconductor polariton systems is typically limited by weak Zeeman splittings. Here, we demonstrate a topological Bose-Fermi mixture --- Fermi-polaron polaritons ---where large gaps and electrically invertible topology emerge from the interplay of Fermi-polaron many-body interactions, photonic symmetry, and strong light--matter coupling. Using a gate-controlled monolayer transition-metal dichalcogenide integrated with a symmetry-engineered photonic crystal, we create Fermi-polaron polaritons with topological band structures. The direct coupling between band topology and gate-tunable many-body interactions provides a mechanism for amplified time-reversal-symmetry breaking beyond bare Zeeman splitting and enables electrical inversion of topological gaps, Berry curvature, and Chern numbers. These results establish an electrically reconfigurable platform for interaction-driven topological states and programmable topological photonics.
