Three-level Dicke quantum battery
arXiv:2308.01188 · doi:10.1103/PhysRevB.109.235432
Abstract
Quantum battery (QB) is the energy storage and extraction device that is governed by the principles of quantum mechanics. Here we propose a three-level Dicke QB and investigate its charging process by considering three quantum optical states: a Fock state, a coherent state, and a squeezed state. The performance of the QB in a coherent state is substantially improved compared to a Fock and squeezed states. We find that the locked energy is positively related to the entanglement between the charger and the battery, and diminishing the entanglement leads to the enhancement of the ergotropy. We demonstrate the QB system is asymptotically free as . The stored energy becomes fully extractable when , and the charging power follows the consistent behavior as the stored energy, independent of the initial state of the charger.
arXiv comment9 Pages, 9 Figures
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