We deploy a combination of reinforcement learning-based approaches and more traditional optimization techniques to identify optimal protocols for population transfer in a multi-level system. We constraint our strategy to the case of fixed coupling rates but time-varying detunings, a situation that would simplify considerably the implementation of population transfer in relevant experimental platforms, such as semiconducting and superconducting ones. Our approach is able to explore the space of possible control protocols to reveal the existence of efficient protocols that, remarkably, differ from (and can be superior to) standard Raman, STIRAP or other adiabatic schemes. The new protocols that we identify are robust against both energy losses and dephasing.
@article{arxiv.2109.00973,
title = {Reinforcement learning-enhanced protocols for coherent population-transfer in three-level quantum systems},
author = {Jonathon Brown and Sofia Sgroi and Luigi Giannelli and Gheorghe Sorin Paraoanu and Elisabetta Paladino and Giuseppe Falci and Mauro Paternostro and Alessandro Ferraro},
journal= {arXiv preprint arXiv:2109.00973},
year = {2024}
}