Programmable higher-order nonequilibrium topological phases on a superconducting quantum processor

• 成果类型: Article
• 署名作者: Qian, Haoran; Gong, Ming; Zhang, Jiahui; Guo, Shaojun; Zha, Chen; Chen, Fusheng; Ye, Yangsen; Wu, Yulin; Cao, Sirui; Ying, Chong; Zhu, Qingling; Huang, He-Liang; Zhao, Youwei; Li, Shaowei; Yu, Jiale; Fan, Daojin; Wu, Dachao; Su, Hong; Deng, Hui; Rong, Hao; Li, Yuan; Zhang, Kaili; Chung, Tung-Hsun; Liang, Futian; Lin, Jin; Xu, Yu; Guo, Cheng; Li, Na; Yan, Kai; Su, Fei-Fan; Wu, Gang; Huo, Yong-Heng; Peng, Cheng-Zhi; Lu, Chao-Yang; Mei, Feng; Jia, Suotang; Zhu, Xiaobo; Pan, Jian-Wei
• 署名单位: Chinese Academy of Sciences; University of Science & Technology of China, CAS; Chinese Academy of Sciences; University of Science & Technology of China, CAS; Chinese Academy of Sciences; University of Science & Technology of China, CAS; Chinese Academy of Sciences; University of Science & Technology of China, CAS; Chinese Academy of Sciences; Hefei National Laboratory; University of Science & Technology of China, CAS; Shanxi University; Shanxi University
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-8075; 1095-9203
• DOI: 10.1126/science.adp6802
• 发表日期: 2025-11-27
• 页码: 930-934
• 关键词: insulator

摘要

Topological phases of matter are of both fundamental and practical interest. In this study, we implemented both equilibrium and nonequilibrium higher-order topological phases using a two-dimensional programmable superconducting quantum processor. Quantum programming of nonequilibrium higher-order topological phases was achieved by constructing quantum circuits comprising >50 cycles of Floquet operators on a six-by-six qubit array. Additionally, we introduce a universal approach based on measuring the dynamics of chiral density to identify distinct nonequilibrium higher-order topological features, including Floquet corner topological invariants and pi-energy topological corner modes. Our work may enable the use of programmable quantum processors to explore exotic higher-order nonequilibrium topological phases of matter.