{"paper":{"title":"Liouvillian spectral control for fast charging of quantum batteries","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Tuning an open quantum battery to a Liouvillian exceptional point enlarges the spectral gap and accelerates charging to steady state.","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Chuan-Cun Shu, Hang Zhou, Jia-Wei Huang","submitted_at":"2026-05-13T01:23:34Z","abstract_excerpt":"Quantum batteries, which use quantum systems to store and deliver energy,\n  are promising for next-generation energy storage. However, optimizing charging\n  strategies and understanding the interplay between dissipation and quantum\n  coherence remain open challenges. Here, we investigate steady-state charging\n  in an open quantum battery and demonstrate that the charging timescale depends\n  on the spectral gap of the Liouvillian operator governing dissipative dynamics.\n  As a minimal example, we examine a three-level quantum battery realized in\n  a single trapped ${}^{40}\\mathrm{Ca}^{+}$ ion, "},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"By adjusting experimentally accessible parameters, such as reservoir occupation and coherent coupling strength, the non-Hermitian Liouvillian spectrum can approach an exceptional point. This increases the spectral gap and accelerates the approach to steady state. As a result, this mechanism significantly enhances asymptotic charging power without relying on many-body collectivity or steady coherence.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"That the long-term dynamics remain confined to a low-dimensional manifold of slow Liouvillian modes and that tuning reservoir occupation and coupling strength to the exceptional point does not introduce additional decoherence channels or invalidate the Markovian description.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Tuning parameters in a three-level open quantum battery near a Liouvillian exceptional point widens the spectral gap and speeds charging to the steady state without needing collective effects or persistent coherence.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Tuning an open quantum battery to a Liouvillian exceptional point enlarges the spectral gap and accelerates charging to steady state.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"0d1bcc91c3188499c1928ea688cffbedc19b8fa927a40b980c3b167b5faf7f59"},"source":{"id":"2605.12867","kind":"arxiv","version":1},"verdict":{"id":"f9eb4436-eeb8-4656-9e5f-7f4d9be2b701","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-14T19:11:15.267547Z","strongest_claim":"By adjusting experimentally accessible parameters, such as reservoir occupation and coherent coupling strength, the non-Hermitian Liouvillian spectrum can approach an exceptional point. This increases the spectral gap and accelerates the approach to steady state. As a result, this mechanism significantly enhances asymptotic charging power without relying on many-body collectivity or steady coherence.","one_line_summary":"Tuning parameters in a three-level open quantum battery near a Liouvillian exceptional point widens the spectral gap and speeds charging to the steady state without needing collective effects or persistent coherence.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"That the long-term dynamics remain confined to a low-dimensional manifold of slow Liouvillian modes and that tuning reservoir occupation and coupling strength to the exceptional point does not introduce additional decoherence channels or invalidate the Markovian description.","pith_extraction_headline":"Tuning an open quantum battery to a Liouvillian exceptional point enlarges the spectral gap and accelerates charging to steady state."},"references":{"count":75,"sample":[{"doi":"","year":null,"title":"impedance-matching","work_id":"d1be9a26-608e-4b42-88a1-2b9c8cf57be4","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2013,"title":"R. Alicki and M. Fannes, Entanglement boost for ex- tractable work from ensembles of quantum batteries, Phys. Rev. E 87, 042123 (2013)","work_id":"6a268fd6-039e-4e13-83e6-b1d4c4ed06bd","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2015,"title":"F. C. Binder, S. Vinjanampathy, K. Modi, and J. Goold, Quantacell: powerful charging of quantum batteries, New J. Phys. 17, 075015 (2015)","work_id":"1c0bf64e-6513-41a0-818f-4747e0a464b8","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2017,"title":"F. Campaioli, F. A. Pollock, F. C. Binder, L. C´ eleri, J. G oold, S. Vinjanampathy, and K. Modi, Enhancing the charging power of quantum batteries, Phys. Rev. Lett. 118, 150601 (2017)","work_id":"45354a3f-ad79-4a95-8a94-da7f8c2aaf17","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2018,"title":"D. Ferraro, M. Campisi, G. M. Andolina, V . Pellegrini, an d M. Polini, High-power collective charging of a solid-state quan- tum battery, Phys. Rev. Lett. 120, 117702 (2018)","work_id":"11db02af-1573-4270-a5b5-1632cf4c0c64","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":75,"snapshot_sha256":"026fb52df1113f0dec8abb2ae07b31ef4420028a4ccad572e85cdd48009b74f3","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}