Many-body Hilbert space scarring on a superconducting processor | |
Zhang, Pengfei7,8; Dong, Hang7,8; Gao, Yu7,8; Zhao, Liangtian6; Hao, Jie6; Desaules, Jean-Yves5; Guo, Qiujiang4,7,8; Chen, Jiachen7,8; Deng, Jinfeng7,8; Liu, Bobo7,8 | |
刊名 | NATURE PHYSICS |
2022-10-13 | |
页码 | 9 |
ISSN号 | 1745-2473 |
DOI | 10.1038/s41567-022-01784-9 |
通讯作者 | Ying, Lei(leiying@zju.edu.cn) ; Wang, H.(hhwang@zju.edu.cn) ; Lai, Ying-Cheng(Ying-Cheng.Lai@asu.edu) |
英文摘要 | Many-body quantum systems that escape thermalization are promising candidates for quantum information applications. A weak-ergodicity-breaking mechanism-quantum scarring-has now been observed with superconducting qubits in unconstrained models. Quantum many-body scarring (QMBS) is a recently discovered form of weak ergodicity breaking in strongly interacting quantum systems, which presents opportunities for mitigating thermalization-induced decoherence in quantum information processing applications. However, the existing experimental realizations of QMBS are based on systems with specific kinetic constrains. Here we experimentally realize a distinct kind of QMBS by approximately decoupling a part of the many-body Hilbert space in the computational basis. Utilizing a programmable superconducting processor with 30 qubits and tunable couplings, we realize Hilbert space scarring in a non-constrained model in different geometries, including a linear chain and quasi-one-dimensional comb geometry. By reconstructing the full quantum state through quantum state tomography on four-qubit subsystems, we provide strong evidence for QMBS states by measuring qubit population dynamics, quantum fidelity and entanglement entropy after a quench from initial unentangled states. Our experimental findings broaden the realm of scarring mechanisms and identify correlations in QMBS states for quantum technology applications. |
资助项目 | National Natural Science Foundation of China[92065204] ; National Natural Science Foundation of China[U20A2076] ; National Natural Science Foundation of China[11725419] ; National Natural Science Foundation of China[12174342] ; National Basic Research Program of China[2017YFA0304300] ; Zhejiang Province Key Research and Development Program[2020C01019] ; AFOSR[FA9550-21-1-0186] ; EPSRC[EP/R020612/1] ; EPSRC[EP/R513258/1] ; Leverhulme Trust Research Leadership[RL-2019-015] ; Fundamental Research Funds for the Central Universities |
WOS关键词 | QUANTUM SUPREMACY ; THERMALIZATION ; LOCALIZATION |
WOS研究方向 | Physics |
语种 | 英语 |
出版者 | NATURE PORTFOLIO |
WOS记录号 | WOS:000867606500004 |
资助机构 | National Natural Science Foundation of China ; National Basic Research Program of China ; Zhejiang Province Key Research and Development Program ; AFOSR ; EPSRC ; Leverhulme Trust Research Leadership ; Fundamental Research Funds for the Central Universities |
内容类型 | 期刊论文 |
源URL | [http://ir.ia.ac.cn/handle/173211/50328] |
专题 | 国家专用集成电路设计工程技术研究中心_实感计算 |
通讯作者 | Ying, Lei; Wang, H.; Lai, Ying-Cheng |
作者单位 | 1.Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA 2.Arizona State Univ, Sch Elect Comp & Energy Engn, Tempe, AZ 85281 USA 3.QuEra Comp, Boston, MA USA 4.Alibaba Zhejiang Univ Joint Res Inst Frontier Tec, Hangzhou, Peoples R China 5.Univ Leeds, Sch Phys & Astron, Leeds, W Yorkshire, England 6.Chinese Acad Sci, Inst Automat, Beijing, Peoples R China 7.Zhejiang Univ, Zhejiang Prov Key Lab Quantum Technol & Device, Hangzhou, Peoples R China 8.Zhejiang Univ, Interdisciplinary Ctr Quantum Informat, ZJU Hangzhou Global Sci & Technol Innovat Ctr, Dept Phys, Hangzhou, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Pengfei,Dong, Hang,Gao, Yu,et al. Many-body Hilbert space scarring on a superconducting processor[J]. NATURE PHYSICS,2022:9. |
APA | Zhang, Pengfei.,Dong, Hang.,Gao, Yu.,Zhao, Liangtian.,Hao, Jie.,...&Lai, Ying-Cheng.(2022).Many-body Hilbert space scarring on a superconducting processor.NATURE PHYSICS,9. |
MLA | Zhang, Pengfei,et al."Many-body Hilbert space scarring on a superconducting processor".NATURE PHYSICS (2022):9. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论