Enhancing self-discharging process with disordered quantum batteries

Abstract

The self-discharging of quantum batteries is a process in which the stored charge is lost due to decoherence acting on the system. In this paper we show how to enhance the performance of such a devices against loss of ergotropy by introducing disorder in the local field acting on each cell. To this end, we explore quantum sources to store ergotropy and disorder strong enough to promotes a significant enhancement of the battery performance. Our results suggest that by applying an disorder strong enough, the spontaneous decay of the system leads to a creasing of the free ergotropy of the battery, as defined from the free Hamiltonian of the system, reaching values bigger than the initial amount of stored ergotropy. We call this spontaneous charging of the battery, since it is a result of the combined action of spontaneous emission and disorder effects. In addition, we also show how disorder effects allow us to enhance the half-life of the battery. Our study opens perspective to further investigation of the performance of quantum batteries that explore disorder and many-body effects.

Locations

• arXiv (Cornell University) - View - PDF