Recent experiments with silicon qubits demonstrated strong coupling of a microwave resonator to the spin of a single electron in a double quantum dot, opening up the possibility of long-range spin-spin interactions. We present our theoretical calculation of effective interactions between distant quantum dot spins coupled by a resonator, and propose a protocol for fast, high-fidelity two-qubit gates consistent with experimentally demonstrated capabilities. Our simulations show that, in the presence of noise, spin-spin entangling gates significantly outperform cavity-mediated gates on charge qubits.
@article{arxiv.1902.05704,
title = {Long-distance entangling gates between quantum dot spins mediated by a superconducting resonator},
author = {Ada Warren and Edwin Barnes and Sophia E. Economou},
journal= {arXiv preprint arXiv:1902.05704},
year = {2019}
}