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

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 π-energy topological corner modes. Our work may enable the use of programmable quantum processors to explore exotic higher-order nonequilibrium topological phases of matter.

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Publication Details

Journal
Science
Published
2025-11-27
DOI
https://doi.org/10.1126/science.adp6802
Primary Topic
Quantum Computing Algorithms and Architecture
Type
article
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article

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

Yu Xu, Futian Liang, Cheng-Zhi Peng, Jing Lin et al.
Science
Quantum Computing Algorithms and Architecture
article

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

Yu Xu, Futian Liang, Cheng-Zhi Peng, Jing Lin, Chao‐Yang Lu, Xiaobo Zhu, Jian-Wei Pan, Ming Gong, Feifan Su, Chong Ying, He-Liang Huang, Hui Deng, Jia-Hui Zhang, Kai Yan, Yong-Heng Huo, Yangsen Ye, Cheng Guo, Dengxin Fan, Na Li, Chen Zha, Feng Mei, Yulin Wu, Yuan Li, Gang Wu, Kaili Zhang, Shaowei Li, Fusheng Chen, Hao Rong, Qingling Zhu, Jiale Yu, Shaojun Guo, Hong Su, Sirui Cao, Tung-Hsun Chung, Dachao Wu, Youwei Zhao, Haoran Qian
article en

Abstract

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 π-energy topological corner modes. Our work may enable the use of programmable quantum processors to explore exotic higher-order nonequilibrium topological phases of matter.

ScienceVol. 390(6776)
University of Science and Technology of China (CN), Shanxi University (CN), Hefei National Center for Physical Sciences at Nanoscale (CN), Jinan Institute of Quantum Technology (CN)
Openalex Percentile: Top 80%
Quantum Computing Algorithms and Architecture
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