Many-body delocalization with a two-dimensional 70-qubit superconducting quantum simulator
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866913955263283200 |
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| author | Li, Tian-Ming Sun, Zheng-Hang Shi, Yun-Hao Bao, Zhen-Ting Wang, Yong-Yi Zhang, Jia-Chi Liu, Yu Deng, Cheng-Lin Yu, Yi-Han Liu, Zheng-He Chen, Chi-Tong Li, Li Li, Hao Liu, Hao-Tian Zhou, Si-Yun Peng, Zhen-Yu Liu, Yan-Jun Wang, Ziting Xu, Yue-Shan Zhao, Kui He, Yang Feng, Da'er Song, Jia-Cheng Fang, Cai-Ping Deng, Junrui Xu, Mingyu Chen, Yu-Tao zhou, Bozhen Liang, Gui-Han Xiang, Zhong-Cheng Xue, Guangming Zheng, Dongning Huang, Kaixuan Wang, Zheng-An Yu, Haifeng Sierant, Piotr Xu, Kai Fan, Heng |
| author_facet | Li, Tian-Ming Sun, Zheng-Hang Shi, Yun-Hao Bao, Zhen-Ting Wang, Yong-Yi Zhang, Jia-Chi Liu, Yu Deng, Cheng-Lin Yu, Yi-Han Liu, Zheng-He Chen, Chi-Tong Li, Li Li, Hao Liu, Hao-Tian Zhou, Si-Yun Peng, Zhen-Yu Liu, Yan-Jun Wang, Ziting Xu, Yue-Shan Zhao, Kui He, Yang Feng, Da'er Song, Jia-Cheng Fang, Cai-Ping Deng, Junrui Xu, Mingyu Chen, Yu-Tao zhou, Bozhen Liang, Gui-Han Xiang, Zhong-Cheng Xue, Guangming Zheng, Dongning Huang, Kaixuan Wang, Zheng-An Yu, Haifeng Sierant, Piotr Xu, Kai Fan, Heng |
| contents | Quantum many-body systems with sufficiently strong disorder can exhibit a non-equilibrium phenomenon, known as the many-body localization (MBL), which is distinct from conventional thermalization. While the MBL regime has been extensively studied in one dimension, its existence in higher dimensions remains elusive, challenged by the avalanche instability. Here, using a 70-qubit two-dimensional (2D) superconducting quantum simulator, we experimentally explore the robustness of the MBL regime in controlled finite-size 2D systems. We observe that the decay of imbalance becomes more pronounced with increasing system sizes, scaling up from 21, 42 to 70 qubits, with a relatively large disorder strength, and for the first time, provide an evidence for the many-body delocalization in 2D disordered systems. Our experimental results are consistent with the avalanche theory that predicts the instability of MBL regime beyond one spatial dimension. This work establishes a scalable platform for probing high-dimensional non-equilibrium phases of matter and their finite-size effects using superconducting quantum circuits. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_16882 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Many-body delocalization with a two-dimensional 70-qubit superconducting quantum simulator Li, Tian-Ming Sun, Zheng-Hang Shi, Yun-Hao Bao, Zhen-Ting Wang, Yong-Yi Zhang, Jia-Chi Liu, Yu Deng, Cheng-Lin Yu, Yi-Han Liu, Zheng-He Chen, Chi-Tong Li, Li Li, Hao Liu, Hao-Tian Zhou, Si-Yun Peng, Zhen-Yu Liu, Yan-Jun Wang, Ziting Xu, Yue-Shan Zhao, Kui He, Yang Feng, Da'er Song, Jia-Cheng Fang, Cai-Ping Deng, Junrui Xu, Mingyu Chen, Yu-Tao zhou, Bozhen Liang, Gui-Han Xiang, Zhong-Cheng Xue, Guangming Zheng, Dongning Huang, Kaixuan Wang, Zheng-An Yu, Haifeng Sierant, Piotr Xu, Kai Fan, Heng Quantum Physics Disordered Systems and Neural Networks Statistical Mechanics Quantum many-body systems with sufficiently strong disorder can exhibit a non-equilibrium phenomenon, known as the many-body localization (MBL), which is distinct from conventional thermalization. While the MBL regime has been extensively studied in one dimension, its existence in higher dimensions remains elusive, challenged by the avalanche instability. Here, using a 70-qubit two-dimensional (2D) superconducting quantum simulator, we experimentally explore the robustness of the MBL regime in controlled finite-size 2D systems. We observe that the decay of imbalance becomes more pronounced with increasing system sizes, scaling up from 21, 42 to 70 qubits, with a relatively large disorder strength, and for the first time, provide an evidence for the many-body delocalization in 2D disordered systems. Our experimental results are consistent with the avalanche theory that predicts the instability of MBL regime beyond one spatial dimension. This work establishes a scalable platform for probing high-dimensional non-equilibrium phases of matter and their finite-size effects using superconducting quantum circuits. |
| title | Many-body delocalization with a two-dimensional 70-qubit superconducting quantum simulator |
| topic | Quantum Physics Disordered Systems and Neural Networks Statistical Mechanics |
| url | https://arxiv.org/abs/2507.16882 |