CASIA OpenIR  > 国家专用集成电路设计工程技术研究中心  > 实感计算
Many-body Hilbert space scarring on a superconducting processor
Zhang, Pengfei1,2; Dong, Hang1,2; Gao, Yu1,2; Zhao, Liangtian3; Hao, Jie3; Desaules, Jean-Yves4; Guo, Qiujiang1,2,5; Chen, Jiachen1,2; Deng, Jinfeng1,2; Liu, Bobo1,2; Ren, Wenhui1,2; Yao, Yunyan1,2; Zhang, Xu1,2; Xu, Shibo1,2; Wang, Ke1,2; Jin, Feitong1,2; Zhu, Xuhao1,2; Zhang, Bing5; Li, Hekang1,2,5; Song, Chao1,2,5; Wang, Zhen1,2,5; Liu, Fangli6; Papic, Zlatko4; Ying, Lei1,2,5; Wang, H.1,2,5; Lai, Ying-Cheng7,8
Source PublicationNATURE PHYSICS
ISSN1745-2473
2022-10-13
Pages9
Corresponding AuthorYing, Lei(leiying@zju.edu.cn) ; Wang, H.(hhwang@zju.edu.cn) ; Lai, Ying-Cheng(Ying-Cheng.Lai@asu.edu)
AbstractMany-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.
DOI10.1038/s41567-022-01784-9
WOS KeywordQUANTUM SUPREMACY ; THERMALIZATION ; LOCALIZATION
Indexed BySCI
Language英语
Funding ProjectNational 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
Funding OrganizationNational 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
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000867606500004
PublisherNATURE PORTFOLIO
Citation statistics
Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ia.ac.cn/handle/173211/50329
Collection国家专用集成电路设计工程技术研究中心_实感计算
Corresponding AuthorYing, Lei; Wang, H.; Lai, Ying-Cheng
Affiliation1.Zhejiang Univ, Interdisciplinary Ctr Quantum Informat, ZJU Hangzhou Global Sci & Technol Innovat Ctr, Dept Phys, Hangzhou, Peoples R China
2.Zhejiang Univ, Zhejiang Prov Key Lab Quantum Technol & Device, Hangzhou, Peoples R China
3.Chinese Acad Sci, Inst Automat, Beijing, Peoples R China
4.Univ Leeds, Sch Phys & Astron, Leeds, W Yorkshire, England
5.Alibaba Zhejiang Univ Joint Res Inst Frontier Tec, Hangzhou, Peoples R China
6.QuEra Comp, Boston, MA USA
7.Arizona State Univ, Sch Elect Comp & Energy Engn, Tempe, AZ 85281 USA
8.Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA
Recommended Citation
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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