Synthetic spin-orbit coupling for the multispin models in optical lattices
| Autor: | Zheng, Zhen, Zhu, Yan-Qing, Zhang, Shanchao, Zhu, Shi-Liang, Wang, Z. D. |
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| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Phys. Rev. A 110, 033327 (2024) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevA.110.033327 |
| Popis: | The essential role of synthetic spin-orbit coupling in discovering new topological matter phases with cold atoms is widely acknowledged. However, the engineering of spin-orbit coupling remains unclear for arbitrary-spin models due to the complexity of spin matrices. In this paper, we develop a more general but relatively straightforward method to achieve spin-orbit coupling for multispin models. Our approach hinges on controlling the coupling between distinct pseudo-spins through two intermediary states, resulting in tunneling with spin flips that have direction-dependent strength. The engineered spin-orbit coupling can facilitate topological phase transitions with Chern numbers over 1, a unique characteristic of multispin models compared to spin-1/2 models. By utilizing existing cold atom techniques, our proposed method provides an ideal platform for investigating topological properties related to large Chern numbers. Comment: 10 pages, 6 figures |
| Databáze: | arXiv |
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