中国物理B ›› 2024, Vol. 33 ›› Issue (11): 110304-110304.doi: 10.1088/1674-1056/ad7576
Floquet engineering of a dynamical Z2 lattice gauge field with ultracold atoms
Xiangxiang Sun(孙祥祥)1,2, Hao-Yue Qi(齐浩月)1,2, Pengfei Zhang(张鹏飞)3,4,5,†, and Wei Zheng(郑炜)1,2,5,‡
- 1 Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China;
2 CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China;
3 Department of Physics, Fudan University, Shanghai 200438, China;
4 Shanghai Qi Zhi Institute, AI Tower, Xuhui District, Shanghai 200232, China;
5 Hefei National Laboratory, Hefei 230088, China
Floquet engineering of a dynamical Z2 lattice gauge field with ultracold atoms
Xiangxiang Sun(孙祥祥)1,2, Hao-Yue Qi(齐浩月)1,2, Pengfei Zhang(张鹏飞)3,4,5,†, and Wei Zheng(郑炜)1,2,5,‡
- 1 Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China;
2 CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China;
3 Department of Physics, Fudan University, Shanghai 200438, China;
4 Shanghai Qi Zhi Institute, AI Tower, Xuhui District, Shanghai 200232, China;
5 Hefei National Laboratory, Hefei 230088, China
摘要： Gauge field theory is a fundamental concept in modern 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 $Z_{2}$ 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.
中图分类号: (Quantum algorithms, protocols, and simulations)
- 03.67.Ac