Quantum battery based on superabsorption

• URL: http://arxiv.org/abs/2205.03823v1
• Date: Sun, 8 May 2022 09:35:59 GMT
• Title: Quantum battery based on superabsorption
• Authors: Yudai Ueki, Shunsuke Kamimura, Yuichiro Matsuzaki, Kyo Yoshida and Yasuhiro Tokura
• Abstract summary: We propose a quantum battery with a charger system composed of $N$ qubits by utilizing a collective effect called a superabsorption. Our results open the path to ultra-fast charging of a quantum battery.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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