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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2511.13088 |
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| _version_ | 1866915938381594624 |
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| author | Zhou, A-Long Xiao, Ya-Wen Xu, Nuo Gao, Li-Li Li, Long-Jie Zhou, Hang Li, Zi-Min Shu, Chuan-Cun |
| author_facet | Zhou, A-Long Xiao, Ya-Wen Xu, Nuo Gao, Li-Li Li, Long-Jie Zhou, Hang Li, Zi-Min Shu, Chuan-Cun |
| contents | We investigate a non-Hermitian quantum battery based on the Su-Schrieffer-Heeger (SSH) lattice, charged through a parity-time (PT)-symmetric protocol that alternates gain and loss between the two sublattices. The interplay between lattice topology and non-Hermiticity gives rise to both bulk and edge exceptional points (EPs), which govern the charging dynamics. In the topological regime, an edge-state EP appears at a smaller gain-loss strength than the bulk thresholds and gives rise to an additional edge-broken regime absent in the trivial configuration. This topology-specific spectral structure is reflected in the charging dynamics, where the topological phase exhibits more favorable transient and long-time performance in the representative non-Hermitian regimes considered here. We further examine the corresponding Lindblad dynamics, identifying the non-Hermitian model as the conditional no-jump description of the same gain-loss processes. The Lindblad results show that the topological advantage remains visible at the level of stored energy, extractable work, and extractable fraction under unconditional open-system evolution. These findings demonstrate that topology constitutes a genuine physical resource for enhancing the performance of quantum batteries. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_13088 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Topological enhancement of a PT-symmetric Su-Schrieffer-Heeger quantum battery Zhou, A-Long Xiao, Ya-Wen Xu, Nuo Gao, Li-Li Li, Long-Jie Zhou, Hang Li, Zi-Min Shu, Chuan-Cun Quantum Physics We investigate a non-Hermitian quantum battery based on the Su-Schrieffer-Heeger (SSH) lattice, charged through a parity-time (PT)-symmetric protocol that alternates gain and loss between the two sublattices. The interplay between lattice topology and non-Hermiticity gives rise to both bulk and edge exceptional points (EPs), which govern the charging dynamics. In the topological regime, an edge-state EP appears at a smaller gain-loss strength than the bulk thresholds and gives rise to an additional edge-broken regime absent in the trivial configuration. This topology-specific spectral structure is reflected in the charging dynamics, where the topological phase exhibits more favorable transient and long-time performance in the representative non-Hermitian regimes considered here. We further examine the corresponding Lindblad dynamics, identifying the non-Hermitian model as the conditional no-jump description of the same gain-loss processes. The Lindblad results show that the topological advantage remains visible at the level of stored energy, extractable work, and extractable fraction under unconditional open-system evolution. These findings demonstrate that topology constitutes a genuine physical resource for enhancing the performance of quantum batteries. |
| title | Topological enhancement of a PT-symmetric Su-Schrieffer-Heeger quantum battery |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2511.13088 |