发表机构
KTH Royal Institute of Technology; Stockholm University; Singapore University of Technology and Design; Huazhong University of Science and Technology（皇家理工学院; 斯德哥尔摩大学; 新加坡科技设计大学; 华中科技大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究利用可编程光子集成电路，通过酉扩张和相移干涉测量，在强耗散非厄米动力学下读取动量空间拓扑，成功区分Zak相位并测得第一陈数。
AI 中文摘要
非厄米动力学下的拓扑性编码在体演化的相位中，然而强耗散抑制了携带该相位的振幅。我们通过一个可编程光子集成电路解决了这一问题，该电路通过酉扩张在合成动量空间中实现此类动力学，并通过相移干涉测量恢复相位。对于非厄米Su-Schrieffer-Heeger模型，该方法区分了平凡和非平凡的Zak相位，并产生了由奇异点诱导的相干缠绕$q=\pm 1$。通过Rice-Mele泵扩展到合成环面，给出了平凡和非平凡循环的第一陈数$\mathrm{Ch}_1=0,1$，展示了在强耗散非厄米动力学下实现动量空间拓扑的可编程路径。
英文摘要
Topology under non-Hermitian dynamics is encoded in the phase of the bulk evolution, yet strong dissipation suppresses the amplitudes carrying it. We resolve this using a programmable photonic integrated circuit that implements such dynamics in synthetic momentum space through unitary dilation, with the phase recovered by phase-shifted interferometry. For the non-Hermitian Su-Schrieffer-Heeger model, the method distinguishes trivial and non-trivial Zak phases and yields a coherence winding $q=\pm 1$ induced by an exceptional point. Extending to a synthetic torus via a Rice-Mele pump gives the first Chern number $\mathrm{Ch}_1=0,1$ for trivial and non-trivial cycles, showing a programmable route to momentum-space topology under strongly dissipative non-Hermitian dynamics.
Journal refPhysical Review Letters 2026
