Hybrid Integrated Photonic–Rare-Earth Quantum Memory at 4 K: Multimode Scaling and On-Chip Repeater Architectures
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| Format: | Recurso digital |
| Language: | English |
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2026
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| _version_ | 1866901579205967872 |
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| author | Lozac'h, Jean-yves |
| author_facet | Lozac'h, Jean-yves |
| contents | <p><br>We present a theoretical and device-oriented analysis of a hybrid quantum memory platform<br>combining integrated nanophotonic waveguides with rare-earth-ion-doped crystals operating at 4 K.<br>The architecture bridges two regimes: (i) solid-state long-lived spin coherence in Eu3+ :Y2 SiO5 and<br>Pr3+ :Y2 SiO5 , and (ii) scalable photonic routing in SiN and TFLN integrated circuits.<br>We derive performance bounds for evanescent coupling, multimode storage capacity, and end-<br>to-end efficiency under experimentally realistic constraints. Our results indicate that such hybrid<br>systems can operate as compact quantum repeater nodes with ∼ 102 –103 temporal modes, while<br>maintaining ms-scale spin coherence and chip-scale footprint.<br>Beyond theoretical modeling, we discuss implementation constraints and design trade-offs relevant<br>to near-term nanophotonic fabrication platforms.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_20237385 |
| institution | Zenodo |
| language | eng |
| publishDate | 2026 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Hybrid Integrated Photonic–Rare-Earth Quantum Memory at 4 K: Multimode Scaling and On-Chip Repeater Architectures Lozac'h, Jean-yves quantum memory hybrib photonic device rare earth <p><br>We present a theoretical and device-oriented analysis of a hybrid quantum memory platform<br>combining integrated nanophotonic waveguides with rare-earth-ion-doped crystals operating at 4 K.<br>The architecture bridges two regimes: (i) solid-state long-lived spin coherence in Eu3+ :Y2 SiO5 and<br>Pr3+ :Y2 SiO5 , and (ii) scalable photonic routing in SiN and TFLN integrated circuits.<br>We derive performance bounds for evanescent coupling, multimode storage capacity, and end-<br>to-end efficiency under experimentally realistic constraints. Our results indicate that such hybrid<br>systems can operate as compact quantum repeater nodes with ∼ 102 –103 temporal modes, while<br>maintaining ms-scale spin coherence and chip-scale footprint.<br>Beyond theoretical modeling, we discuss implementation constraints and design trade-offs relevant<br>to near-term nanophotonic fabrication platforms.</p> |
| title | Hybrid Integrated Photonic–Rare-Earth Quantum Memory at 4 K: Multimode Scaling and On-Chip Repeater Architectures |
| topic | quantum memory hybrib photonic device rare earth |
| url | https://doi.org/10.5281/zenodo.20237385 |