-- nanowire resonators and prospects for spin-photon coupling with electrons on solid neon
Phys. Rev. Applied 25, 024011 – Published 4 February, 2026
DOI: https://doi.org/10.1103/jq9v-n4rn
Abstract
Electrons floating on solid neon exhibit long charge-coherence times, making them attractive for hybrid quantum systems. When combined with high-quality high-impedance superconducting resonators and a local magnetic field gradient, this platform enables strong charge-photon and spin-charge coupling—key ingredients for scalable spin-qubit architectures. In this work, we demonstrate that -- nanowire resonators maintain high quality factors around after depositing solid neon onto the resonators and subsequently loading electrons onto the neon surface, validating their suitability for electrons-on-neon platforms. Building on these experimental results, we theoretically analyze micromagnet designs and coupling strategies that can enable spin-photon interactions in this platform. Our analysis outlines performance targets for next-generation devices, showing that, at the charge sweet spot, spin-qubit gate fidelities exceeding 99.99% for single-qubit operations and 99.9% for two-qubit operations are achievable with natural neon.