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Magnon-mediated quantum battery under systematic errors
- Source :
- Phys. Rev. A 104, 032606 (2021)
- Publication Year :
- 2021
-
Abstract
- Quantum battery is one of the most prominent micro-devices in the rapid-developing quantum thermodynamics. We propose a quantum charging protocol in which both battery and charger are consisted of a many-spin system. The battery and charger are connected via the Kittle mode of the magnon system, that serves as a charging wire and then enables a long-range charging protocol. Counter-intuitively, we find that the spin-spin couplings insider both battery and charger can be used to promote the charging performance in comparison to the noninteracting condition. And a remarkable promotion is realized at a "sweet" spot in terms of the average coupling strength. Moreover, we apply the quantum-state-diffusion equation to test the robustness of our magnon-mediated charging protocol to the systematic errors about the magnon frequency.
- Subjects :
- Quantum Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. A 104, 032606 (2021)
- Publication Type :
- Report
- Accession number :
- edsarx.2105.08387
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevA.104.032606