Work fluctuations and entanglement in quantum batteries
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2022
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| _version_ | 1866915893549727744 |
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| author | Imai, Satoya Gühne, Otfried Nimmrichter, Stefan |
| author_facet | Imai, Satoya Gühne, Otfried Nimmrichter, Stefan |
| contents | We consider quantum batteries given by composite interacting quantum systems in terms of the thermodynamic work cost of local random unitary processes. We characterize quantum correlations by monitoring the average energy change and its fluctuations in the high-dimensional bipartite systems. We derive a hierarchy of bounds on high-dimensional entanglement (the so-called Schmidt number) from the work fluctuations and thereby show that larger work fluctuations can verify the presence of stronger entanglement in the system. Finally, we develop two-point measurement protocols with noisy detectors that can estimate work fluctuations, showing that the dimensionality of entanglement can be probed in this manner. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2205_08447 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Work fluctuations and entanglement in quantum batteries Imai, Satoya Gühne, Otfried Nimmrichter, Stefan Quantum Physics Statistical Mechanics We consider quantum batteries given by composite interacting quantum systems in terms of the thermodynamic work cost of local random unitary processes. We characterize quantum correlations by monitoring the average energy change and its fluctuations in the high-dimensional bipartite systems. We derive a hierarchy of bounds on high-dimensional entanglement (the so-called Schmidt number) from the work fluctuations and thereby show that larger work fluctuations can verify the presence of stronger entanglement in the system. Finally, we develop two-point measurement protocols with noisy detectors that can estimate work fluctuations, showing that the dimensionality of entanglement can be probed in this manner. |
| title | Work fluctuations and entanglement in quantum batteries |
| topic | Quantum Physics Statistical Mechanics |
| url | https://arxiv.org/abs/2205.08447 |