Single-qubit operations on singlet-triplet qubits in GaAs double quantum dots have not yet reached the fidelities required for fault-tolerant quantum information processing. Considering experimentally important constraints and using measured noise spectra, we numerically minimize the effect of decoherence (including high-frequency 1/f-like noise) and show theoretically that quantum gates with fidelities higher than 99.9% are achievable. We also present a self-consistent tuning protocol which should allow the elimination of individual systematic gate errors directly in an experiment.
@article{arxiv.1404.1712,
title = {High-Fidelity Single-Qubit Gates for Two-Electron Spin Qubits in GaAs},
author = {Pascal Cerfontaine and Tim Botzem and David P. DiVincenzo and Hendrik Bluhm},
journal= {arXiv preprint arXiv:1404.1712},
year = {2021}
}