Efficiency of optimal control for noisy spin qubits in diamond
Abstract
Decoherence is a major challenge for quantum technologies. A way to mitigate its negative impact is by employing quantum optimal control. The decoherence dynamics varies significantly based on the characteristics of the surrounding environment of qubits, consequently affecting the outcome of the control optimization. In this work, we investigate the dependence of the shape of a spin inversion control pulse on the correlation time of the environment noise. Furthermore, we analyze the effects of constraints and optimization options on the optimization outcome and identify a set of strategies that improve the optimization performance. Finally, we present an experimental realization of the numerically-optimized pulses validating the optimization feasibility. Our work serves as a generic yet essential guide to implementing optimal control in the presence of realistic noise, e.g., in nitrogen-vacancy centers in diamond.
Cite
@article{arxiv.2411.05078,
title = {Efficiency of optimal control for noisy spin qubits in diamond},
author = {Hendry M. Lim and Genko T. Genov and Roberto Sailer and Alfaiz Fahrurrachman and Muhammad A. Majidi and Fedor Jelezko and Ressa S. Said},
journal= {arXiv preprint arXiv:2411.05078},
year = {2025}
}
Comments
20 pages, 9 figures