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$In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries$

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Localization effects in disordered quantum batteries.

Mohammad B Arjmandi¹, Hamidreza Mohammadi¹, Andreia Saguia²

¹Faculty of Physics, University of Isfahan, P.O. Box 81746-7344, Isfahan, Iran and Quantum Optics Research Group, University of Isfahan, Isfahan 81746-7344, Iran.

Physical Review. E

|January 20, 2024

Summary

This summary is machine-generated.

Localization significantly impacts quantum battery charging. The ergodic phase enhances maximum extractable energy (ergotropy) compared to many-body localization (MBL), with a robust incoherent component against dephasing.

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Area of Science:

Quantum physics
Condensed matter physics
Quantum information science

Background:

Quantum batteries (QBs) offer potential for high-efficiency energy storage.
Localization phenomena can affect quantum system dynamics and performance.
Ergotropy quantifies the maximum extractable work from quantum states.

Purpose of the Study:

To investigate the influence of localization on the local charging of quantum batteries.
To compare ergotropy in ergodic and many-body localization (MBL) phases.
To analyze the role of disorder and interactions in quantum battery performance.

Main Methods:

Modeling quantum batteries using disordered spin systems (transverse-field random Ising model).
Simulating charging processes driven by local fields on Chimera graphs and linear chains.
Analyzing ergotropy, its coherent and incoherent contributions, and Anderson localization.

Main Results:

Ergotropy is significantly enhanced in the ergodic phase compared to the MBL scenario.
The Anderson localization phase exhibits a hybrid behavior in ergotropy with increasing disorder.
An incoherent ergotropy component, robust against dephasing, was identified.

Conclusions:

Localization critically affects quantum battery charging efficiency.
Ergodic phases are superior for maximizing extractable energy in quantum batteries.
The identified robust incoherent ergotropy offers potential for stable quantum energy storage.