Quantum simulation of the non-fermi-liquid state of Sachdev-Ye-Kitaev model

Luo, Zhihuang1,2,3,4,5,6; You, Yi-Zhuang7; Li, Jun3,4,8,9; Jian, Chao-Ming10,11; Lu, Dawei3,4,8,9; Xu, Cenke12; Zeng, Bei3,4,5,6,13; Laflamme, Raymond5,6,14

2019-06-18

10.1038/s41534-019-0166-7

npj Quantum Information   影响因子和分区

2056-6387

2056-6387

The Sachdev-Ye-Kitaev (SYK) model incorporates rich physics, ranging from exotic non-Fermi liquid states without quasiparticle excitations, to holographic duality and quantum chaos. However, its experimental realization remains a daunting challenge due to various unnatural ingredients of the SYK Hamiltonian such as its strong randomness and fully nonlocal fermion interaction. At present, constructing such a nonlocal Hamiltonian and exploring its dynamics is best through digital quantum simulation, where state-of-the-art techniques can already handle a moderate number of qubits. Here, we demonstrate a first step towards simulation of the SYK model on a nuclear-spin-chain simulator. We observed the fermion paring instability of the non-Fermi liquid state and the chaotic-nonchaotic transition at simulated temperatures, as was predicted by previous theories. As the realization of the SYK model in practice, our experiment opens a new avenue towards investigating the key features of non-Fermi liquid states, as well as the quantum chaotic systems and the AdS/CFT duality.

SCI ; EI

英语

通讯

Guangdong Innovative and Entrepreneurial Research Team Program[2016ZT06D348]

Physics

Quantum Science & Technology ; Physics, Applied ; Physics, Atomic, Molecular & Chemical ; Physics, Condensed Matter

WOS:000472921400001

SPRINGERNATURE

20201608456342

Fermi liquids ; Hamiltonians ; Liquids ; Chaotic systems ; Quantum chemistry

Physical Chemistry:801.4 ; Atomic and Molecular Physics:931.3 ; Systems Science:961

Web of Science

1.Beijing Computat Sci Res Ctr, Beijing 100193, Peoples R China
2.Sun Yat Sen Univ, Sch Phys & Astron, Lab Quantum Engn & Quantum Metrol, Zhuhai Campus, Zhuhai 519082, Peoples R China
3.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China
4.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
5.Univ Waterloo, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada
6.Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada
7.Harvard Univ, Dept Phys, Cambridge, MA 02138 USA
8.Peng Cheng Lab, Ctr Quantum Comp, Shenzhen 518055, Peoples R China
9.Shenzhen Key Lab Quantum Sci & Engn, Shenzhen 518055, Peoples R China
10.Microsoft Res, Stn Q, Santa Barbara, CA 93106 USA
11.Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA
12.Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA
13.Univ Guelph, Dept Math & Stat, Guelph, ON N1G 2W1, Canada
14.Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada

Luo, Zhihuang,You, Yi-Zhuang,Li, Jun,et al. Quantum simulation of the non-fermi-liquid state of Sachdev-Ye-Kitaev model[J]. npj Quantum Information,2019,5.

Luo, Zhihuang.,You, Yi-Zhuang.,Li, Jun.,Jian, Chao-Ming.,Lu, Dawei.,...&Laflamme, Raymond.(2019).Quantum simulation of the non-fermi-liquid state of Sachdev-Ye-Kitaev model.npj Quantum Information,5.

Luo, Zhihuang,et al."Quantum simulation of the non-fermi-liquid state of Sachdev-Ye-Kitaev model".npj Quantum Information 5(2019).