Discrete Time Crystals Enforced by Floquet-Bloch Scars

Huang，Biao1; Leung，Tsz Him2; Stamper-Kurn，Dan M.2,3,4; Liu，W. Vincent5,6

2022-09-23

10.1103/PhysRevLett.129.133001

PHYSICAL REVIEW LETTERS   Impact Factor & Quartile

0031-9007

1079-7114

We analytically identify a new class of quantum scars protected by spatiotemporal translation symmetries, dubbed Floquet-Bloch scars. They are distinguished from previous (quasi-)static scars by a rigid spectral pairing only possible in Floquet systems, where strong interaction and drivings equalize the quasienergy corrections to all scars and maintain their spectral spacings against generic bilinear perturbations. Scars then enforce the spatial localization and rigid discrete time crystal (DTC) oscillations as verified numerically in a trimerized kagome lattice model relevant to recent cold atom experiments. Our analytical solutions offer a potential scheme to understand the mechanisms for more generic translation-invariant DTCs.

SCI

English

NI Journal Papers

Others

National Natural Science Foundation of China[12174389] ; NSF[PHY-1806362] ; MURI-ARO[W911NF17-1-0323] ; AFOSR[FA9550-16-1-0006] ; Shanghai Municipal Science and Technology Major Project[2019SHZDZX01]

Physics

Physics, Multidisciplinary

WOS:000865420000003

AMER PHYSICAL SOC

PHYSICS

2-s2.0-85138829261

Scopus

1.Kavli Institute for Theoretical Sciences,University of Chinese Academy of Sciences,Beijing,100190,China
2.Department of Physics,University of California,Berkeley,94720,United States
3.Challenge Institute for Quantum Computation,University of California,Berkeley,94720,United States
4.Materials Sciences Division,Lawrence Berkeley National Laboratory,Berkeley,94720,United States
5.Department of Physics and Astronomy and IQ Initiative,University of Pittsburgh,Pittsburgh,15260,United States
6.Shenzhen Institute for Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Huang，Biao,Leung，Tsz Him,Stamper-Kurn，Dan M.,et al. Discrete Time Crystals Enforced by Floquet-Bloch Scars[J]. PHYSICAL REVIEW LETTERS,2022,129(13).

Huang，Biao,Leung，Tsz Him,Stamper-Kurn，Dan M.,&Liu，W. Vincent.(2022).Discrete Time Crystals Enforced by Floquet-Bloch Scars.PHYSICAL REVIEW LETTERS,129(13).

Huang，Biao,et al."Discrete Time Crystals Enforced by Floquet-Bloch Scars".PHYSICAL REVIEW LETTERS 129.13(2022).