| 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
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| Source Publication | NATURE PHYSICS
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| ISSN | 1745-2473 |
| 2022-10-13 | |
| Pages | 9 |
| Corresponding Author | Ying, Lei(leiying@zju.edu.cn) ; Wang, H.(hhwang@zju.edu.cn) ; Lai, Ying-Cheng(Ying-Cheng.Lai@asu.edu) |
| Abstract | 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. |
| DOI | 10.1038/s41567-022-01784-9 |
| WOS Keyword | QUANTUM SUPREMACY ; THERMALIZATION ; LOCALIZATION |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 |
| Funding Organization | 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 |
| WOS Research Area | Physics |
| WOS Subject | Physics, Multidisciplinary |
| WOS ID | WOS:000867606500004 |
| Publisher | NATURE PORTFOLIO |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://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 Author | Ying, Lei; Wang, H.; Lai, Ying-Cheng |
| Affiliation | 1.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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