Artificial intelligence discovery of a charging protocol in a micromaser quantum battery

C Rodríguez, D Rosa, J Olle - Physical Review A, 2023 - APS
We propose a gradient-based general computational framework for optimizing model-
dependent parameters in quantum batteries (QB). We apply this method to two different …

Lossy micromaser battery: Almost pure states in the jaynes–cummings regime

V Shaghaghi, V Singh, M Carrega, D Rosa, G Benenti - Entropy, 2023 - mdpi.com
We consider a micromaser model of a quantum battery, where the battery is a single mode
of the electromagnetic field in a cavity, charged via repeated interactions with a stream of …

Auxiliary-assisted stochastic energy extraction from quantum batteries

P Chaki, A Bhattacharyya, K Sen, U Sen - arXiv preprint arXiv:2307.16856, 2023 - arxiv.org
We discuss the idea of extracting energy stochastically from a quantum battery, which is
based on performing a projective measurement on an auxiliary system. The battery is …

Ergotropy and capacity optimization in Heisenberg spin chain quantum batteries

A Ali, S Al-Kuwari, MI Hussain, T Byrnes… - arXiv preprint arXiv …, 2024 - arxiv.org
This study examines the performance of finite spin quantum batteries (QBs) using
Heisenberg spin models with Dzyaloshinsky-Moriya (DM) and Kaplan--Shekhtman--Entin …

Noncompletely Positive Quantum Maps Enable Efficient Local Energy Extraction in Batteries

A Bhattacharyya, K Sen, U Sen - Physical Review Letters, 2024 - APS
Energy extraction from quantum batteries by means of completely positive trace-preserving
(CPTP) maps leads to the concept of CPTP-local passive states, which identify bipartite …

Charging advantages of Lipkin-Meshkov-Glick quantum battery

FQ Dou, YJ Wang, JA Sun - arXiv preprint arXiv:2208.04831, 2022 - arxiv.org
We investigate the performance of the Lipkin-Meshkov-Glick quantum battery based on
shortcuts to adiabaticity (STA). We mainly consider the situation where the coupling strength …

Universal and complete extraction for energy-invariant catalysis in quantum batteries versus no uncorrelated state-invariant catalysis

P Chaki, A Bhattacharyya, U Sen - arXiv preprint arXiv:2409.14153, 2024 - arxiv.org
We investigate the role of catalysts in energy extraction from quantum batteries. Two basic
classes of catalysts are proposed in this regard, viz., energy-and state-invariant catalysts …

Positive and non-positive measurements in energy extraction from quantum batteries

P Chaki, A Bhattacharyya, K Sen, U Sen - arXiv preprint arXiv:2404.18745, 2024 - arxiv.org
We extend the concept of stochastic energy extraction from quantum batteries to the
scenario where both positive operator-valued (POV) and physically realizable non-positive …

Quantum Recharging by Shortcut to Adiabaticity

S Qi, J Jing - Available at SSRN 4988533 - papers.ssrn.com
Quantum battery concerns about population redistribution and energy dispatch over
controllable quantum systems. Under unitary transformation, ergotropy rather than energy …

Necessary condition for information transfer under simulated parity-time-symmetric evolution

LGC Lakkaraju, S Mal, AS De - Physica Scripta, 2024 - iopscience.iop.org
Parity-time (PT) symmetric quantum theory can broaden the scope of quantum dynamics
beyond unitary evolution which may lead to numerous counterintuitive phenomena …