Density-Dependent Gauge Field with Raman Lattices

The study of the gauge field is an everlasting topic in modern physics. Spin-orbit coupling is a powerful tool in ultracold atomic systems, resulting in an artificial gauge field that can be easily manipulated and observed in a tabletop environment. Combining optical lattices and atom-atom interacti...

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Bibliographic Details
Published inarXiv.org
Main Authors Xiang-Can, Cheng, Zong-Yao, Wang, Zhang, Jinyi, Chen, Shuai, Nie, Xiaotian
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 14.08.2024
Subjects
Density
Fluids
Optical lattices
Orbital mechanics
Phase diagrams
Resonant tunneling
Spin-orbit interactions
Superfluidity
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Summary:The study of the gauge field is an everlasting topic in modern physics. Spin-orbit coupling is a powerful tool in ultracold atomic systems, resulting in an artificial gauge field that can be easily manipulated and observed in a tabletop environment. Combining optical lattices and atom-atom interaction, the artificial gauge field can be made density-dependent. In this work, we investigate a one-dimensional Bose-Hubbard model with spin-orbit coupling, where a density-dependent gauge field emerges spontaneously in low-energy physics. First, we focus on the two-body quantum walk dynamics and give an interpretation of the phenomena with resonant tunneling. Then, we calculate the mean-field phase diagram using the two-site Gutzwiller ansatz. Two types of superfluid phase and a Mott insulator phase are found. Finally, we discuss the experimental realization protocol with Raman lattices.
ISSN:2331-8422