Self-Discharging Mitigated Quantum Battery
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2025-06-23 |
| Journal | Physical Review Letters |
| Authors | Wan-Lu Song, J. C. Wang, Bin Zhou, Wanli Yang, JunâHong An |
| Institutions | Wuhan Institute of Physics and Mathematics, Institute of Theoretical Physics |
| Citations | 4 |
| Analysis | Full AI Review Included |
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Executive Summary
Section titled âExecutive Summaryâ- Addresses the self-discharging issue in quantum batteries (QBs), a major obstacle to their practical realization.
- Proposes a QB scheme based on the nitrogen-vacancy (NV) center in diamond.
- Utilizes the electronic spin of the NV center as the QB.
- Exploits the hyperfine interaction between the electron and the native 14N nucleus for coherent control.
- Demonstrates that coherent ergotropy decays more slowly than incoherent ergotropy, enabling mitigation of self-discharging.
- Achieves a 100% ratio of coherent ergotropy to total ergotropy by maximizing quantum coherence.
- Offers a pathway to enhance the inherent robustness of QBs and optimize extractable work simultaneously.
Technical Specifications
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View Original Abstract
As a quantum thermodynamic device that utilizes quantum systems for energy storage and delivery, the quantum battery (QB) is expected to offer revolutionary advantages in terms of increasing the charging power and the extractable work by using quantum resources. However, the ubiquitous decoherence in the microscopic world inevitably forces the QB to spontaneously lose its stored energy. This is called the self-discharging of the QB and severely limits its realization. We propose a QB scheme based on the nitrogen-vacancy center in diamond, where the electronic spin serves as the QB. Inspired by our finding that the coherent ergotropy decays more slowly than the incoherent ergotropy, we reveal a mechanism to enhance the inherent robustness of the QB to the self-discharging by improving the ratio of coherent ergotropy to total ergotropy. The unique hyperfine interaction between the electron and the native ^{14}N nucleus in our scheme allows one to coherently optimize this ratio. Mitigating the self-discharging and optimizing the extractable work simultaneously, our results pave the way for the practical realization of the QB.
Tech Support
Section titled âTech SupportâOriginal Source
Section titled âOriginal SourceâReferences
Section titled âReferencesâ- 2018 - Thermodynamics in the Quantum Regime: Fundamental Aspects and New Directions