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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2405.09834 |
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| _version_ | 1866912034533146624 |
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| author | Bae, Dalmin Park, Junyoung Kim, Myeonghyeon Kwak, Haneul Kwon, Junhwan Shin, Yong-il |
| author_facet | Bae, Dalmin Park, Junyoung Kim, Myeonghyeon Kwak, Haneul Kwon, Junhwan Shin, Yong-il |
| contents | We present a Floquet framework for controlling topological features of a one-dimensional optical lattice system with dual-mode resonant driving, in which both the amplitude and phase of the lattice potential are modulated simultaneously. We investigate a three-band model consisting of the three lowest orbitals and elucidate the formation of a cross-linked two-leg ladder through an indirect interband coupling via an off-resonant band. We numerically demonstrate the emergence of topologically nontrivial bands within the driven system, and a topological charge pumping phenomenon with cyclic parameter changes in the dual-mode resonant driving. Finally, we show that the band topology in the driven three-band system is protected by parity-time reversal symmetry. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_09834 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Topological Floquet engineering of a three-band optical lattice with dual-mode resonant driving Bae, Dalmin Park, Junyoung Kim, Myeonghyeon Kwak, Haneul Kwon, Junhwan Shin, Yong-il Quantum Gases We present a Floquet framework for controlling topological features of a one-dimensional optical lattice system with dual-mode resonant driving, in which both the amplitude and phase of the lattice potential are modulated simultaneously. We investigate a three-band model consisting of the three lowest orbitals and elucidate the formation of a cross-linked two-leg ladder through an indirect interband coupling via an off-resonant band. We numerically demonstrate the emergence of topologically nontrivial bands within the driven system, and a topological charge pumping phenomenon with cyclic parameter changes in the dual-mode resonant driving. Finally, we show that the band topology in the driven three-band system is protected by parity-time reversal symmetry. |
| title | Topological Floquet engineering of a three-band optical lattice with dual-mode resonant driving |
| topic | Quantum Gases |
| url | https://arxiv.org/abs/2405.09834 |