Cyclic solid-state quantum battery: Thermodynamic characterization and quantum hardware simulation
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866929681300717568 |
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| author | Razzoli, Luca Gemme, Giulia Khomchenko, Ilia Sassetti, Maura Ouerdane, Henni Ferraro, Dario Benenti, Giuliano |
| author_facet | Razzoli, Luca Gemme, Giulia Khomchenko, Ilia Sassetti, Maura Ouerdane, Henni Ferraro, Dario Benenti, Giuliano |
| contents | We introduce a cyclic quantum battery model, based on an interacting bipartite system, weakly coupled to a thermal bath. The working cycle of the battery consists of four strokes: system thermalization, disconnection of subsystems, ergotropy extraction, and reconnection. The thermal bath acts as a charger in the thermalization stroke, while ergotropy extraction is possible because the ensuing thermal state is no longer passive after the disconnection stroke. Focusing on the case of two interacting qubits, we show that phase coherence, in the presence of non-trivial correlations between the qubits, can be exploited to reach working regimes with efficiency higher than 50% while providing finite ergotropy. Our protocol is illustrated through a simple and feasible circuit model of a cyclic superconducting quantum battery. Furthermore, we simulate the considered cycle on superconducting IBM quantum machines. The good agreement between the theoretical and simulated results strongly suggests that our scheme for cyclic quantum batteries can be successfully realized in superconducting quantum hardware. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_07157 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Cyclic solid-state quantum battery: Thermodynamic characterization and quantum hardware simulation Razzoli, Luca Gemme, Giulia Khomchenko, Ilia Sassetti, Maura Ouerdane, Henni Ferraro, Dario Benenti, Giuliano Quantum Physics Mesoscale and Nanoscale Physics We introduce a cyclic quantum battery model, based on an interacting bipartite system, weakly coupled to a thermal bath. The working cycle of the battery consists of four strokes: system thermalization, disconnection of subsystems, ergotropy extraction, and reconnection. The thermal bath acts as a charger in the thermalization stroke, while ergotropy extraction is possible because the ensuing thermal state is no longer passive after the disconnection stroke. Focusing on the case of two interacting qubits, we show that phase coherence, in the presence of non-trivial correlations between the qubits, can be exploited to reach working regimes with efficiency higher than 50% while providing finite ergotropy. Our protocol is illustrated through a simple and feasible circuit model of a cyclic superconducting quantum battery. Furthermore, we simulate the considered cycle on superconducting IBM quantum machines. The good agreement between the theoretical and simulated results strongly suggests that our scheme for cyclic quantum batteries can be successfully realized in superconducting quantum hardware. |
| title | Cyclic solid-state quantum battery: Thermodynamic characterization and quantum hardware simulation |
| topic | Quantum Physics Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2407.07157 |