Floquet engineering of a dynamical Z2 lattice gauge field with ultracold atoms

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外文摘要：Gauge field theory is a fundamental concept in modem physics,attracting many theoretical and experimental efforts towards its simulation.In this paper we propose that a simple model,in which fermions coupled to a dynamical lattice gauge field,can be engineered via the Floquet approach.The model possesses both an independent Maxwell term and local Z2 gauge symmetry.Our proposal relies on a species-dependent optical lattice,and can be achieved in one,two or three dimensions.By a unitary transformation,this model can be mapped into a non-interacting composite fermion system with fluctuating background charge.With the help of this composite fermion picture,two characteristic observations are predicted.One is radio-frequency spectroscopy,which exhibits no dispersion in all parameter regimes.The second is dynamical localization,which depends on the structure of the initial states.

外文关键词：

gauge theoryquantum simulations

作者：

孙祥祥、齐浩月、张鹏飞、郑炜

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作者单位：

Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China

CAS Center for Excellence in Quantum Information and Quantum Physics,University of Science and Technology of China,Hefei 230026,China

Department of Physics,Fudan University,Shanghai 200438,China

Shanghai Qi Zhi Institute,AI Tower,Xuhui District,Shanghai 200232,China

Hefei National Laboratory,Hefei 230088,China

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出版年：

2024

DOI：

10.1088/1674-1056/ad7576

中国物理B(英文版)

中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI

影响因子：0.995

ISSN：1674-1056

年,卷(期)：2024.33(11)