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Localization effects in disordered quantum batteries
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DOI：10.1103/PhysRevE.108.064106.png)
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We investigate the effect of localization on the local charging of quantum batteries (QBs) modeled by disordered spin systems. Two distinct schemes based on the transverse-field random Ising model are considered, with Ising couplings defined on a Chimera graph and on a linear chain with up to next-to-nearest-neighbor interactions. By adopting a low-energy demanding charging process driven by local fields only, we obtain that the maximum extractable energy by unitary processes (ergotropy) is highly enhanced in the ergodic phase in comparison with the many-body localization (MBL) scenario. As we turn off the next-to-nearest-neighbor inter-actions in the Ising chain, we have the onset of the Anderson localization phase. We then show that the Anderson phase exhibits a hybrid behavior, interpolating between large and small ergotropy as the disorder strength is increased. We also consider the splitting of total ergotropy into its coherent and incoherent contributions. This incoherent part implies in a residual ergotropy that is fully robust against dephasing, which is a typical process leading to the self-discharging of the battery in a real setup. Our results are experimentally feasible in scalable systems, such as in superconducting integrated circuits.
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Enhancement in the performance of a quantum battery by ordered and disordered interactions通过有序和无序相互作用增强量子电池的性能.png)
PHYSICAL REVIEW A
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OAAI分享收藏分享收藏Theory of pure dephasing and the resulting absorption line shape in semiconductor quantum dotsPHYSICAL REVIEW B
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