Many-body localization of one-dimensional degenerate Fermi gases with cavity-assisted nonlocal quasiperiodic interactions

Jie, Jianwen1,2,3; Guan, Qingze4,5,6; Pan, Jian-Song7,8

2022-08-09

10.1103/PhysRevA.106.023307

PHYSICAL REVIEW A   Impact Factor & Quartile

2469-9926

2469-9934

The localization properties of one-dimensional degenerate Fermi gases with cavity-assisted nonlocal quasiperiodic interactions are numerically studied. Although the cavity-induced interaction is typically nonlocal, it is proved that the eigenstate thermalization hypothesis is still applicable in our system depending on the system parameters. We also find the segment of the spectrum corresponding to infinite effective temperature varies for different system parameters, which indicates the spectral range employed in the spectral statistical analysis should be varied accordingly. The features of many-body localization (MBL) are numerically identified by analyzing the spectral statistics and the entanglement entropy using exact diagonalization. These features are further confirmed by our time-evolution results. In addition, the number of cavity photons are found stable over long-time dynamics in the MBL phase. Such a feature cannot only be utilized to nondestructively diagnose the MBL phase by monitoring the number of leaking photons from the cavity but leveraged for constructing a device to produce a stable number of photons.

SCI ; EI

English

NI Journal Papers

First ; Corresponding

National Natu-ral Science Foundation of China[12104210] ; China Postdoctoral Science Foundation[2022M711496] ; National Natural Science Foun-dation of China[11904228] ; Science Specialty Program of Sichuan University[2020SCUNL210]

Optics ; Physics

Optics ; Physics, Atomic, Molecular & Chemical

WOS:000842930400003

AMER PHYSICAL SOC

20223412598415

Electron gas ; Fermions ; Quantum entanglement

Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4

PHYSICS

Web of Science

1.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China
2.Int Quantum Acad, Shenzhen 518048, Peoples R China
3.Southern Univ Sci & Technol, Guangdong Prov Key Lab Quantum Sci & Engn, Shenzhen 518055, Peoples R China
4.Univ Oklahoma, Homer L Dodge Dept Phys & Astron, 440 West Brooks St, Norman, OK 73019 USA
5.Univ Oklahoma, Ctr Quantum Res & Technol, Norman, OK 73019 USA
6.Washington State Univ, Dept Phys & Astron, Pullman, WA 99164 USA
7.Sichuan Univ, Coll Phys, Chengdu 610065, Peoples R China
8.Sichuan Univ, Key Lab High Energy Dens Phys & Technol, Minist Educ, Chengdu 610065, Peoples R China

Jie, Jianwen,Guan, Qingze,Pan, Jian-Song. Many-body localization of one-dimensional degenerate Fermi gases with cavity-assisted nonlocal quasiperiodic interactions[J]. PHYSICAL REVIEW A,2022,106(2).

Jie, Jianwen,Guan, Qingze,&Pan, Jian-Song.(2022).Many-body localization of one-dimensional degenerate Fermi gases with cavity-assisted nonlocal quasiperiodic interactions.PHYSICAL REVIEW A,106(2).

Jie, Jianwen,et al."Many-body localization of one-dimensional degenerate Fermi gases with cavity-assisted nonlocal quasiperiodic interactions".PHYSICAL REVIEW A 106.2(2022).