Localization behavior in a Hermitian and non-Hermitian Raman lattice
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866914316838502400 |
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| author | Zhao, Entong Liu, Yu-Jun Pak, Ka Kwan Ren, Peng Guo, Mengbo He, Chengdong Jo, Gyu-Boong |
| author_facet | Zhao, Entong Liu, Yu-Jun Pak, Ka Kwan Ren, Peng Guo, Mengbo He, Chengdong Jo, Gyu-Boong |
| contents | We propose a flexible Raman lattice system for alkaline-earth-like atoms to theoretically investigate localization behaviors in a quasi-periodic lattice with controllable non-Hermiticity. Our analysis demonstrates that critical phases and mobility edges can arise by adjusting spin-dependence of the incommensurate potentials in the Hermitian regime. With non-Hermiticity introduced by spin-selective atom loss, our calculations reveal that critical localization behaviour in this system can be suppressed by dissipation. Our work provides insights into interplay between quasi-periodicity and non-Hermitian physics, offering a new perspective on localization phenomena. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_22319 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Localization behavior in a Hermitian and non-Hermitian Raman lattice Zhao, Entong Liu, Yu-Jun Pak, Ka Kwan Ren, Peng Guo, Mengbo He, Chengdong Jo, Gyu-Boong Quantum Gases Quantum Physics We propose a flexible Raman lattice system for alkaline-earth-like atoms to theoretically investigate localization behaviors in a quasi-periodic lattice with controllable non-Hermiticity. Our analysis demonstrates that critical phases and mobility edges can arise by adjusting spin-dependence of the incommensurate potentials in the Hermitian regime. With non-Hermiticity introduced by spin-selective atom loss, our calculations reveal that critical localization behaviour in this system can be suppressed by dissipation. Our work provides insights into interplay between quasi-periodicity and non-Hermitian physics, offering a new perspective on localization phenomena. |
| title | Localization behavior in a Hermitian and non-Hermitian Raman lattice |
| topic | Quantum Gases Quantum Physics |
| url | https://arxiv.org/abs/2505.22319 |