Resonator-qutrit quantum battery

Quantum batteries (QBs) are energy storage and transfer microdevices that open up new possibilities in energy technology. Here, we derive a resonator--multiple-qutrit quantum battery (QB) model consisting of a multimode resonator and $N$ superconducting transmon qutrits. We investigate the charging and self-discharging performances of the QBs and discuss the roles of quantum coherence and quantum entanglement. The results show that environment noise is not always detrimental for QB systems. The QB with efficient charging, stable energy-storage, and slow self-discharging processes can be realized by considering the dephasing noise and manipulating the energy gap. We find that the charging energy is positively related to coherence and entanglement while the stable energy and the self-discharging energy are negatively related to coherence. The phenomenon of the vanishing entanglement corresponds to the dynamic decoupling behavior of the QB's steady states. Our results provide a way to realize many-body QBs on a superconducting circuit platform.