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<p>Solid-state spin-photon interfaces operating in the near-telecom and telecom bands are a key resource for long-distance quantum communication and scalable quantum networks. However, their optical transitions often suffer from spectral diffusion that hampers the generation of coherent spin-photon entanglement. Here we demonstrate narrow magneto-optical transitions of erbium dopants implanted into thin-film silicon carbide (SiC)-on-insulator, a viable platform for industrially scalable quantum networks. Using high-resolution resonant spectroscopy and spectral hole burning at cryogenic temperatures, we reveal sub-megahertz homogeneous linewidths and identify two lattice sites that best stabilise the emitters. We further characterise their optical lifetimes and magneto-optical response, establishing erbium-doped SiC-on-insulator as a robust and scalable platform for on-chip quantum networks.</p>

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Narrow magneto-optical transitions of erbium implanted into silicon carbide-on-insulator

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年4月13日

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  • Alexey Lyasota,
  • Joshua Bader,
  • Shao Qi Lim,
  • Brett C. Johnson,
  • Jeffrey C. McCallum,
  • Qing Li,
  • Sven Rogge,
  • Stefania Castelletto

摘要

Solid-state spin-photon interfaces operating in the near-telecom and telecom bands are a key resource for long-distance quantum communication and scalable quantum networks. However, their optical transitions often suffer from spectral diffusion that hampers the generation of coherent spin-photon entanglement. Here we demonstrate narrow magneto-optical transitions of erbium dopants implanted into thin-film silicon carbide (SiC)-on-insulator, a viable platform for industrially scalable quantum networks. Using high-resolution resonant spectroscopy and spectral hole burning at cryogenic temperatures, we reveal sub-megahertz homogeneous linewidths and identify two lattice sites that best stabilise the emitters. We further characterise their optical lifetimes and magneto-optical response, establishing erbium-doped SiC-on-insulator as a robust and scalable platform for on-chip quantum networks.