中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Many-body Hilbert space scarring on a superconducting processor

文献类型:期刊论文

作者Zhang, Pengfei5,6; Dong, Hang5,6; Gao, Yu5,6; Zhao, Liangtian7; Hao, Jie7; Desaules, Jean-Yves8; Guo, Qiujiang2,5,6; Chen, Jiachen5,6; Deng, Jinfeng5,6; Liu, Bobo5,6
刊名NATURE PHYSICS
出版日期2022-10-13
页码9
ISSN号1745-2473
DOI10.1038/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.
WOS关键词QUANTUM SUPREMACY ; THERMALIZATION ; LOCALIZATION
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
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.QuEra Comp, Boston, MA USA
2.Alibaba Zhejiang Univ Joint Res Inst Frontier Tec, Hangzhou, Peoples R China
3.Arizona State Univ, Sch Elect Comp & Energy Engn, Tempe, AZ 85281 USA
4.Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA
5.Zhejiang Univ, Interdisciplinary Ctr Quantum Informat, ZJU Hangzhou Global Sci & Technol Innovat Ctr, Dept Phys, Hangzhou, Peoples R China
6.Zhejiang Univ, Zhejiang Prov Key Lab Quantum Technol & Device, Hangzhou, Peoples R China
7.Chinese Acad Sci, Inst Automat, Beijing, Peoples R China
8.Univ Leeds, Sch Phys & Astron, Leeds, W Yorkshire, England
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.

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