Academic Journal
Dephasing enabled fast charging of quantum batteries
| Title: | Dephasing enabled fast charging of quantum batteries |
|---|---|
| Authors: | Rahul Shastri, Chao Jiang, Guo-Hua Xu, B. Prasanna Venkatesh, Gentaro Watanabe |
| Source: | npj Quantum Information, Vol 11, Iss 1, Pp 1-8 (2025) |
| Publisher Information: | Nature Portfolio, 2025. |
| Publication Year: | 2025 |
| Collection: | LCC:Physics LCC:Electronic computers. Computer science |
| Subject Terms: | Physics, QC1-999, Electronic computers. Computer science, QA75.5-76.95 |
| More Details: | Abstract We propose and analyze a universal method to obtain fast charging of a quantum battery by a driven charger system using controlled, pure dephasing of the charger. While the battery displays coherent underdamped oscillations of energy for weak charger dephasing, the quantum Zeno freezing of the charger energy at high dephasing suppresses the rate of transfer of energy to the battery. Choosing an optimum dephasing rate between the regimes leads to a fast charging of the battery. We illustrate our results with the charger and battery modeled by either two-level systems or harmonic oscillators. Apart from the fast charging, the dephasing also renders the charging performance more robust to detuning between the charger, drive, and battery frequencies for the two-level systems case. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 2056-6387 |
| Relation: | https://doaj.org/toc/2056-6387 |
| DOI: | 10.1038/s41534-025-00959-5 |
| Access URL: | https://doaj.org/article/20d74305ac5c416789ad6ea12ac48cbf |
| Accession Number: | edsdoj.20d74305ac5c416789ad6ea12ac48cbf |
| Database: | Directory of Open Access Journals |
| ISSN: | 20566387 |
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| DOI: | 10.1038/s41534-025-00959-5 |
| Published in: | npj Quantum Information |
| Language: | English |