Adiabatic pumping of topological corner states by coherent tunneling in a 2D SSH model
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866915640436064256 |
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| author | Peng, Yang Li, Rui-Shan Lv, Yan-Jue Zheng, Yi |
| author_facet | Peng, Yang Li, Rui-Shan Lv, Yan-Jue Zheng, Yi |
| contents | The active manipulation of topologically protected states represents a pivotal frontier for quantum technologies, offering a unique confluence of topological robustness and precise quantum control. We propose an adiabatic pumping scheme for the long-range transfer of topological corner states in a two-dimensional Su-Schrieffer-Heeger model. The protocol utilizes a modular lattice architecture composed of four topologically distinct subblocks, enabling the modulation of a topological dark state by precise tuning of lattice couplings. This approach is based on coherent tunneling by adiabatic passage among topological corner and interface states. We establish a multi-level model for the adiabatic pumping that provides an accurate description of the underlying mechanism. In comparison with a sequential two-stage Thouless pumping, our protocol offers superior performance in both transfer fidelity and efficiency. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_22083 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Adiabatic pumping of topological corner states by coherent tunneling in a 2D SSH model Peng, Yang Li, Rui-Shan Lv, Yan-Jue Zheng, Yi Quantum Physics Quantum Gases The active manipulation of topologically protected states represents a pivotal frontier for quantum technologies, offering a unique confluence of topological robustness and precise quantum control. We propose an adiabatic pumping scheme for the long-range transfer of topological corner states in a two-dimensional Su-Schrieffer-Heeger model. The protocol utilizes a modular lattice architecture composed of four topologically distinct subblocks, enabling the modulation of a topological dark state by precise tuning of lattice couplings. This approach is based on coherent tunneling by adiabatic passage among topological corner and interface states. We establish a multi-level model for the adiabatic pumping that provides an accurate description of the underlying mechanism. In comparison with a sequential two-stage Thouless pumping, our protocol offers superior performance in both transfer fidelity and efficiency. |
| title | Adiabatic pumping of topological corner states by coherent tunneling in a 2D SSH model |
| topic | Quantum Physics Quantum Gases |
| url | https://arxiv.org/abs/2511.22083 |