Dynamical blockade of a reservoir for optimal performances of a quantum battery

TL;DR

This paper demonstrates that a dynamical blockade in a harmonic oscillator coupled to a non-Markovian reservoir can enhance quantum battery performance by preventing energy leakage and enabling high efficiency, with potential implementation in $LC$ circuits.

Contribution

It introduces a novel dynamical blockade mechanism in a quantum battery model that improves energy retention and efficiency, applicable to solid-state quantum circuits.

Findings

Dynamical blockade prevents energy leakage at short times.

Enhanced energy accumulation in the quantum battery.

Potential implementation in $LC$ quantum circuits.

Abstract

The development of fast and efficient quantum batteries is crucial for the prospects of quantum technologies. We show that both requirements are accomplished in the paradigmatic model of a harmonic oscillator strongly coupled to a highly non-Markovian thermal reservoir. At short times, a dynamical blockade of the reservoir prevents the leakage of energy towards its degrees of freedom, promoting a significant accumulation of energy in the battery with high efficiency. The possibility of implementing these conditions in $LC$ quantum circuits opens up new avenues for solid-state quantum batteries.