Two-qubit gates between spin qubits are often performed using a rectangular or an adiabatic exchange interaction pulse resulting in a CZ gate. An oscillating exchange pulse not only performs a CZ gate, but also enables the iSWAP gate, which offers more flexibility to perform quantum algorithms. We provide a detailed description for two-qubit gates using resonant and off-resonant exchange pulses, give conditions for performing the respective gates, and compare their performance to the state-of-the-art static counterpart. We find that for relatively low charge noise the gates still perform reliably and compare to the conventional CZ gate.
@article{arxiv.2303.18015,
title = {Quantum Gates with Oscillating Exchange Interaction},
author = {Daniel Q. L. Nguyen and Irina Heinz and Guido Burkard},
journal= {arXiv preprint arXiv:2303.18015},
year = {2023}
}