NbTiN Nanowire Resonators for Spin-Photon Coupling on Solid Neon
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arXiv
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866918323351977984 |
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| author | Tian, Y. Grytsenko, I. Jennings, A. Wang, J. Ikegami, H. Zhou, X. Tamate, S. Terai, H. Kutsuma, H. Jin, D. Benito, M. Kawakami, E. |
| author_facet | Tian, Y. Grytsenko, I. Jennings, A. Wang, J. Ikegami, H. Zhou, X. Tamate, S. Terai, H. Kutsuma, H. Jin, D. Benito, M. Kawakami, E. |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_24303 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | NbTiN Nanowire Resonators for Spin-Photon Coupling on Solid Neon Tian, Y. Grytsenko, I. Jennings, A. Wang, J. Ikegami, H. Zhou, X. Tamate, S. Terai, H. Kutsuma, H. Jin, D. Benito, M. Kawakami, E. Mesoscale and Nanoscale Physics Quantum Physics 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. |
| title | NbTiN Nanowire Resonators for Spin-Photon Coupling on Solid Neon |
| topic | Mesoscale and Nanoscale Physics Quantum Physics |
| url | https://arxiv.org/abs/2505.24303 |