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Electrons floating on a 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 NbTiN nanowire resonators maintain high quality factors around 10^5 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.
Authors
- Hiroki Kutsuma (ORCID: https://orcid.org/0000-0002-7223-4709)
- Hirotaka Terai (ORCID: https://orcid.org/0000-0002-5575-2221)
- Erika Kawakami (ORCID: https://orcid.org/0000-0002-0393-3880)
- Shuhei Tamate (ORCID: https://orcid.org/0000-0002-4033-8984)
- Ye Tian (ORCID: https://orcid.org/0000-0001-5012-5328)
- Dafei Jin (ORCID: https://orcid.org/0000-0002-8035-3580)
- A. Jennings (ORCID: https://orcid.org/0000-0003-4024-7799)
- Ivan Grytsenko (ORCID: https://orcid.org/0000-0001-7539-6247)
- Jianming Wang (ORCID: https://orcid.org/0000-0003-0485-1702)
- Mónica Benito (ORCID: https://orcid.org/0000-0001-6365-9505)
- Xianjing Zhou (ORCID: https://orcid.org/0000-0002-0137-7921)
- H. Ikegami
Institutions
- Florida State University (US)
- University of Notre Dame (US)
- Pioneer (United States) (US)
- University of Augsburg (DE)
- Tohoku University (JP)
- Computing Center (RU)
- RIKEN Center for Quantum Computing
- National Institute of Information and Communications Technology (JP)
Publication Details
- Journal
- Physical Review Applied
- Published
- 2025-12-24
- DOI
- https://doi.org/10.1103/jq9v-n4rn
- Citations
- 1
- Primary Topic
- Mechanical and Optical Resonators
- Type
- article
- Field-Weighted Citation Impact
- 1.25