Investigation of Rare-Earth Ion-Photon Interaction and Strong Coupling in Optical Microcavities
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866913791893045248 |
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| author | Shen, Quanshen Ji, Wentao Guan, Junyu Qian, Li Chai, Zihua Duan, ChangKui Wang, Ya Xia, Kangwei |
| author_facet | Shen, Quanshen Ji, Wentao Guan, Junyu Qian, Li Chai, Zihua Duan, ChangKui Wang, Ya Xia, Kangwei |
| contents | The strong coupling between an emitter and a cavity is significant for advancing quantum networks. Due to their long optical and spin coherence times, rare-earth ions (REIs) represent a compelling platform for quantum networks. However, their inherently weak intra-4f optical transitions typically result in low coupling strength, thus restricting most current achievements to the weak coupling regime. This work proposes a scheme to realize an on-chip quantum network by coupling REIs to high-quality whispering gallery mode (WGM) microcavities. Additionally, we provide numerical validation for a parametric amplification technique to enhance the emitter-cavity coupling strength. As an extension of this approach, the coupled system efficiently achieves the quantum entanglement of local and flying qubits. This study deepens the understanding of emitter-cavity interactions and contributes to realizing REIs-based photonic platforms, which are crucial to distributed quantum computing and developing robust quantum networks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_09863 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Investigation of Rare-Earth Ion-Photon Interaction and Strong Coupling in Optical Microcavities Shen, Quanshen Ji, Wentao Guan, Junyu Qian, Li Chai, Zihua Duan, ChangKui Wang, Ya Xia, Kangwei Quantum Physics Optics The strong coupling between an emitter and a cavity is significant for advancing quantum networks. Due to their long optical and spin coherence times, rare-earth ions (REIs) represent a compelling platform for quantum networks. However, their inherently weak intra-4f optical transitions typically result in low coupling strength, thus restricting most current achievements to the weak coupling regime. This work proposes a scheme to realize an on-chip quantum network by coupling REIs to high-quality whispering gallery mode (WGM) microcavities. Additionally, we provide numerical validation for a parametric amplification technique to enhance the emitter-cavity coupling strength. As an extension of this approach, the coupled system efficiently achieves the quantum entanglement of local and flying qubits. This study deepens the understanding of emitter-cavity interactions and contributes to realizing REIs-based photonic platforms, which are crucial to distributed quantum computing and developing robust quantum networks. |
| title | Investigation of Rare-Earth Ion-Photon Interaction and Strong Coupling in Optical Microcavities |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2504.09863 |