Volume 136, Number 2, October 2021
|Number of page(s)||7|
|Section||Atomic, Molecular and Optical Physics|
|Published online||12 January 2022|
Charging power and stability of always-on transitionless driven quantum batteries
1 Instituto de Física, Universidade Federal Fluminense - Av. Gal. Milton Tavares de Souza s/n, Gragoatá, 24210-346 Niterói, Rio de Janeiro, Brazil
2 Departamento de Física, Universidade Federal de São Carlos - P.O. Box 676, 13565-905, São Carlos, São Paulo, Brazil
Received: 10 March 2021
Accepted: 12 July 2021
The storage and transfer of energy through quantum batteries are key elements in quantum networks. Here, we propose a charger design based on transitionless quantum driving (TQD), which allows for inherent control over the battery charging time, with the speed of charging coming at the cost of the internal energy available to implement the dynamics. Moreover, the TQD-based charger is also shown to be locally stable, which means that the charger can be disconnected from the quantum battery (QB) at any time after the energy transfer to the QB, with no full energy backflow to the charger. This provides a highly charged QB in an always-on asymptotic regime. We illustrate the robustness of the QB charge against time fluctuations and the full control over the evolution time for a feasible TQD-based charger.
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