Superextensive charging speeds in a correlated quantum charger
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| Acceso en línea: | |
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| _version_ | 1866911356262809600 |
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| author | Schmid, Harald von Oppen, Felix Refael, Gil Peng, Yang |
| author_facet | Schmid, Harald von Oppen, Felix Refael, Gil Peng, Yang |
| contents | We define a quantum charger as an interacting quantum system that transfers energy between two drives. The key figure of merit characterizing a charger is its charging power. Remarkably, the presence of long-range interactions within the charger can induce a collective steady-state charging mode that depends superlinearly on the size of the charger, exceeding the performance of noninteracting, parallel units. Using the driven Lipkin-Meshkov-Glick model and power-law interacting spin chains, we show that this effect persists up to a critical system size set by the breakdown of the high-frequency regime. We discuss optimal work output as well as experimentally accessible initial states. The superlinear charging effect can be probed in trapped-ion experiments, and positions interacting Floquet systems as promising platforms for enhanced energy conversion. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_02477 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Superextensive charging speeds in a correlated quantum charger Schmid, Harald von Oppen, Felix Refael, Gil Peng, Yang Statistical Mechanics Mesoscale and Nanoscale Physics Quantum Physics We define a quantum charger as an interacting quantum system that transfers energy between two drives. The key figure of merit characterizing a charger is its charging power. Remarkably, the presence of long-range interactions within the charger can induce a collective steady-state charging mode that depends superlinearly on the size of the charger, exceeding the performance of noninteracting, parallel units. Using the driven Lipkin-Meshkov-Glick model and power-law interacting spin chains, we show that this effect persists up to a critical system size set by the breakdown of the high-frequency regime. We discuss optimal work output as well as experimentally accessible initial states. The superlinear charging effect can be probed in trapped-ion experiments, and positions interacting Floquet systems as promising platforms for enhanced energy conversion. |
| title | Superextensive charging speeds in a correlated quantum charger |
| topic | Statistical Mechanics Mesoscale and Nanoscale Physics Quantum Physics |
| url | https://arxiv.org/abs/2601.02477 |