Quantum battery based on superabsorption

Abstract

A quantum battery is a device where an energy is charged by using a quantum effect. Here, we propose a quantum battery with a charger system composed of $N$ qubits by utilizing a collective effect called a superabsorption. Importantly, the coupling strength between the quantum battery and charger system can be enhanced due to an entanglement. While the charger time scales as $\Theta \left(N^{-1/2}\right)$ by applying a conventional scheme, we can achieve a charging time $\Theta \left(N^{-1}\right)$ in our scheme. Our results open the path to ultra-fast charging of a quantum battery.

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Cited by in corpus (5)

• Quick charging of a quantum battery with superposed trajecotries
• Performance boost of a collective qutrit refrigerator
• Universal Scaling Bounds on a Quantum Heat Current
• Heat flow from a measurement apparatus monitoring a dissipative qubit
• Asymptotic freedom in the dephased charging of quantum batteries