Coherence Properties of Rare-Earth Spins in Micrometer-Thin Films
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arXiv
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| Autores principales: | , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866916650752671744 |
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| author | Chai, Zihua Wang, Zhaocong Chen, Xinghang Shen, Quanshen Gao, Zeyu Guan, Junyu Zhang, Hanyu Wang, Ya Tan, Yang Chen, Feng Xia, Kangwei |
| author_facet | Chai, Zihua Wang, Zhaocong Chen, Xinghang Shen, Quanshen Gao, Zeyu Guan, Junyu Zhang, Hanyu Wang, Ya Tan, Yang Chen, Feng Xia, Kangwei |
| contents | Rare-earth ions in bulk crystals are excellent solid-state quantum systems in quantum information science, owing to the exceptional optical and spin coherence properties. However, the weak fluorescence of single rare-earth ions present a significant challenge for scalability, necessitating the integration into micro-cavities. Thin films serve as a promising material platform for the integration, yet the fabrication without compromising the properties of the materials and rare-earth ions remains challenging. In this work, we fabricate micrometer-thin yttrium aluminum garnet (YAG) films from bulk crystals using ion implantation techniques. The resulting films preserve the single-crystalline structure of the original bulk crystal. Notably, the embedded rare-earth ions are photo-stable and exhibit bulk-like spin coherence properties. Our results demonstrate the compatibility of bulk-like spin properties with the thin-film fabrication technique, facilitating the efficient integration of rare-earth ions into on-chip photonic devices and advancing the applications of rare-earth ions systems in quantum technologies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_09147 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Coherence Properties of Rare-Earth Spins in Micrometer-Thin Films Chai, Zihua Wang, Zhaocong Chen, Xinghang Shen, Quanshen Gao, Zeyu Guan, Junyu Zhang, Hanyu Wang, Ya Tan, Yang Chen, Feng Xia, Kangwei Quantum Physics Optics Rare-earth ions in bulk crystals are excellent solid-state quantum systems in quantum information science, owing to the exceptional optical and spin coherence properties. However, the weak fluorescence of single rare-earth ions present a significant challenge for scalability, necessitating the integration into micro-cavities. Thin films serve as a promising material platform for the integration, yet the fabrication without compromising the properties of the materials and rare-earth ions remains challenging. In this work, we fabricate micrometer-thin yttrium aluminum garnet (YAG) films from bulk crystals using ion implantation techniques. The resulting films preserve the single-crystalline structure of the original bulk crystal. Notably, the embedded rare-earth ions are photo-stable and exhibit bulk-like spin coherence properties. Our results demonstrate the compatibility of bulk-like spin properties with the thin-film fabrication technique, facilitating the efficient integration of rare-earth ions into on-chip photonic devices and advancing the applications of rare-earth ions systems in quantum technologies. |
| title | Coherence Properties of Rare-Earth Spins in Micrometer-Thin Films |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2503.09147 |