Ergotropy Dynamics in a Dissipative Graphene Quantum Battery
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866911703841636352 |
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| author | Verma, Disha VS, Indrajith Sankaranarayanan, R. |
| author_facet | Verma, Disha VS, Indrajith Sankaranarayanan, R. |
| contents | We investigate ergotropy dynamics in a graphene-based quantum battery modeled as a four-level spin--valley system under different dissipative environments. The battery is charged via a Gaussian pulse and subsequently evolves under amplitude damping, dephasing, and both Markovian and non-Markovian reservoirs. We find that amplitude damping, while inducing energy loss, can stabilize non-passive steady states with finite ergotropy, whereas pure dephasing suppresses coherence and eliminates work extraction. On the other hand, non-Markovian memory slows ergotropy loss and enables partial recovery through information backflow. These results identify coherence and reservoir memory as essential resources for enhancing the long-time performance of graphene quantum batteries. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_12666 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Ergotropy Dynamics in a Dissipative Graphene Quantum Battery Verma, Disha VS, Indrajith Sankaranarayanan, R. Quantum Physics Statistical Mechanics We investigate ergotropy dynamics in a graphene-based quantum battery modeled as a four-level spin--valley system under different dissipative environments. The battery is charged via a Gaussian pulse and subsequently evolves under amplitude damping, dephasing, and both Markovian and non-Markovian reservoirs. We find that amplitude damping, while inducing energy loss, can stabilize non-passive steady states with finite ergotropy, whereas pure dephasing suppresses coherence and eliminates work extraction. On the other hand, non-Markovian memory slows ergotropy loss and enables partial recovery through information backflow. These results identify coherence and reservoir memory as essential resources for enhancing the long-time performance of graphene quantum batteries. |
| title | Ergotropy Dynamics in a Dissipative Graphene Quantum Battery |
| topic | Quantum Physics Statistical Mechanics |
| url | https://arxiv.org/abs/2511.12666 |