Perfect quantum state transfer through a chaotic spin chain via many-body scars
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866911249672962048 |
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| author | Dooley, Shane Johnston, Luke Gormley, Patrick Campbell, Beth |
| author_facet | Dooley, Shane Johnston, Luke Gormley, Patrick Campbell, Beth |
| contents | Quantum many-body scars (QMBS) offer a mechanism for weak ergodicity breaking, enabling non-thermal dynamics to persist in a chaotic many-body system. While most studies of QMBS focus on anomalous eigenstate properties or long-lived revivals of local observables, their potential for quantum information processing remains largely unexplored. In this work, we demonstrate that \emph{perfect quantum state transfer} can be achieved in a strongly interacting, quantum chaotic spin chain by exploiting a sparse set of QMBS eigenstates embedded within an otherwise thermal spectrum. These results show that QMBS in chaotic many-body systems may be harnessed for information transport tasks typically associated with integrable models. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_22114 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Perfect quantum state transfer through a chaotic spin chain via many-body scars Dooley, Shane Johnston, Luke Gormley, Patrick Campbell, Beth Quantum Physics Statistical Mechanics Strongly Correlated Electrons Quantum many-body scars (QMBS) offer a mechanism for weak ergodicity breaking, enabling non-thermal dynamics to persist in a chaotic many-body system. While most studies of QMBS focus on anomalous eigenstate properties or long-lived revivals of local observables, their potential for quantum information processing remains largely unexplored. In this work, we demonstrate that \emph{perfect quantum state transfer} can be achieved in a strongly interacting, quantum chaotic spin chain by exploiting a sparse set of QMBS eigenstates embedded within an otherwise thermal spectrum. These results show that QMBS in chaotic many-body systems may be harnessed for information transport tasks typically associated with integrable models. |
| title | Perfect quantum state transfer through a chaotic spin chain via many-body scars |
| topic | Quantum Physics Statistical Mechanics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2506.22114 |