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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2025
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| Sujets: | |
| Accès en ligne: | https://arxiv.org/abs/2512.20106 |
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| _version_ | 1866914216907112448 |
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| author | Liu, Shuaixian Dong, Yulan Zeng, Bowen Long, Mengqiu |
| author_facet | Liu, Shuaixian Dong, Yulan Zeng, Bowen Long, Mengqiu |
| contents | A dynamical bulk-edge relation in quantum walks has been theoretically proposed and experimentally observed, in which a power-law dependence of the bulk loss probability is associated with a pronounced peak of loss probability at the edge. This behavior has been proven to arise from imaginary gap closing and the non-Hermitian skin effect in the infinite limit without boundary effects. However, in a finite-size chain, we find that boundary scattering can suppress this edge burst. Meanwhile, imaginary gap opening together with the non-Hermitian skin effect, can also induce a large loss probability at the edge. Our results provide insights into finite-size quantum dynamics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_20106 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Finite-size Effects on The Edge Loss Probability in Non-Hermitian Quantum Walks Liu, Shuaixian Dong, Yulan Zeng, Bowen Long, Mengqiu Quantum Physics A dynamical bulk-edge relation in quantum walks has been theoretically proposed and experimentally observed, in which a power-law dependence of the bulk loss probability is associated with a pronounced peak of loss probability at the edge. This behavior has been proven to arise from imaginary gap closing and the non-Hermitian skin effect in the infinite limit without boundary effects. However, in a finite-size chain, we find that boundary scattering can suppress this edge burst. Meanwhile, imaginary gap opening together with the non-Hermitian skin effect, can also induce a large loss probability at the edge. Our results provide insights into finite-size quantum dynamics. |
| title | Finite-size Effects on The Edge Loss Probability in Non-Hermitian Quantum Walks |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2512.20106 |