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Periodically driven many-body quantum battery.

Saikat Mondal¹, Sourav Bhattacharjee¹

¹Department of Physics, Indian Institute of Technology Kanpur, Kanpur 208016, India.

Physical Review. E

|May 20, 2022

Summary

This summary is machine-generated.

We investigated quantum battery charging using spin systems. Resonance tunneling enhances energy transfer in integrable systems, but no quantum advantage was found even with global charging.

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Area of Science:

Quantum physics
Condensed matter physics
Quantum information science

Background:

Quantum batteries offer potential for faster energy storage.
Understanding charging dynamics in quantum systems is crucial.
Spin systems provide a platform for exploring quantum phenomena.

Purpose of the Study:

To investigate the charging dynamics of a quantum battery based on spin systems.
To explore the role of periodic modulation and system integrability in charging efficiency.
To determine if quantum advantage in charging power can be achieved.

Main Methods:

Utilizing a transverse-field-like Ising Hamiltonian with periodic modulation.
Analyzing the system in both integrable and non-integrable (broken integrability) limits.
Examining the effective Floquet Hamiltonian for charging mechanisms.

Main Results:

Resonance tunneling enhances energy transfer and stability in the integrable limit at specific frequencies.
Breaking integrability introduces terms in the Floquet Hamiltonian that can lead to global charging.
No quantum advantage in charging power was observed, even with global charging.

Conclusions:

Global charging is a necessary but not sufficient condition for achieving quantum advantage in battery charging.
System integrability and resonance phenomena play significant roles in quantum battery performance.
Further research is needed to identify conditions for true quantum advantage in energy storage.