所在院系：物理学院

申报人：宋超

本项目通过超导电路构建福克态晶格，实验实现了对量子化光场的拓扑态观测和调控。基于该方法，团队实现了包括SSH模型拓扑零能态、应力诱导的赝朗道能级、谷霍尔效应和霍尔丹手性边缘流等丰富拓扑物理现象。项目将拓扑光子学拓展到量子领域，发展了利用超导电路研究凝聚态拓扑物理的新方法，并为谐振腔的量子态调控提供了新的自由度。

Topological photonics provides a powerful platform to explore topological physics beyond traditional electronic materials and shows promising applications in light transport and lasers. Here we implement experiments on topological states of quantized light in a superconducting circuit, with which one- and two-dimensional Fock-state lattices are constructed. We realize rich topological physics including topological zero-energy states of the Su-Schrieffer-Heeger model, strain-induced pseudo-Landau levels, valley Hall effect, and Haldane chiral edge currents. Our study extends the topological states of light to the quantum regime, bridging topological phases of condensed-matter physics with circuit quantum electrodynamics, and offers a freedom in controlling the quantum states of multiple resonators.

团队照： 团队合影

超导芯片：超导量子芯片图

数态晶格：三个谐振腔耦合一个二能级原子模型及其数态晶格

"Observing the quantum topology of light", Science 378, 966 (2022)