Spin decoherence dynamics of Er$^{3+}$ in CeO$_2$ film
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arXiv
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| Autori principali: | , , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866912541148446720 |
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| author | Seth, Sagar Kumar Nagura, Jonah Somjit, Vrindaa Bapat, Aneesh Li, Xinhao Grant, Gregory D. Masiulionis, Ignas Han, Xu Heremans, F. Joseph Galli, Giulia Awschalom, David D. Guha, Supratik Zhang, Jiefei |
| author_facet | Seth, Sagar Kumar Nagura, Jonah Somjit, Vrindaa Bapat, Aneesh Li, Xinhao Grant, Gregory D. Masiulionis, Ignas Han, Xu Heremans, F. Joseph Galli, Giulia Awschalom, David D. Guha, Supratik Zhang, Jiefei |
| contents | Developing telecom-compatible spin-photon interfaces is essential towards scalable quantum networks. Erbium ions (Er$^{3+}$) exhibit a unique combination of a telecom (1.5 $μ$m) optical transition and an effective spin-$1/2$ ground state, but identifying a host that enables heterogeneous device integration while preserving long optical and spin coherence remains an open challenge. We explore a new platform of Er$^{3+}$:CeO$_2$ films on silicon, offering low nuclear spin density and the potential for on-chip integration. We demonstrate a 38.8 $μ$s spin coherence, which can be extended to 176.4\nobreakspace $μ$s with dynamical decoupling. Pairing experiments with cluster correlation expansion calculations, we identify spectral diffusion-induced Er$^{3+}$ spin flips as the dominant decoherence mechanism and provide pathways to millisecond-scale coherence. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_12429 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Spin decoherence dynamics of Er$^{3+}$ in CeO$_2$ film Seth, Sagar Kumar Nagura, Jonah Somjit, Vrindaa Bapat, Aneesh Li, Xinhao Grant, Gregory D. Masiulionis, Ignas Han, Xu Heremans, F. Joseph Galli, Giulia Awschalom, David D. Guha, Supratik Zhang, Jiefei Quantum Physics Mesoscale and Nanoscale Physics Developing telecom-compatible spin-photon interfaces is essential towards scalable quantum networks. Erbium ions (Er$^{3+}$) exhibit a unique combination of a telecom (1.5 $μ$m) optical transition and an effective spin-$1/2$ ground state, but identifying a host that enables heterogeneous device integration while preserving long optical and spin coherence remains an open challenge. We explore a new platform of Er$^{3+}$:CeO$_2$ films on silicon, offering low nuclear spin density and the potential for on-chip integration. We demonstrate a 38.8 $μ$s spin coherence, which can be extended to 176.4\nobreakspace $μ$s with dynamical decoupling. Pairing experiments with cluster correlation expansion calculations, we identify spectral diffusion-induced Er$^{3+}$ spin flips as the dominant decoherence mechanism and provide pathways to millisecond-scale coherence. |
| title | Spin decoherence dynamics of Er$^{3+}$ in CeO$_2$ film |
| topic | Quantum Physics Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2508.12429 |