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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2504.05031 |
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| _version_ | 1866913977493094400 |
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| author | Llauze, Thomas Louchet-Chauvet, Anne |
| author_facet | Llauze, Thomas Louchet-Chauvet, Anne |
| contents | Achieving low-latency time-reversal of broadband radiofrequency signals is crucial for reliable communications in dynamic, uncontrolled environments. However, existing approaches are either digitally assisted -- making broadband extension challenging -- or limited to amplitude modulation. In this work, we report the very first experimental realization of a fully analog, phase-preserving time-reversal architecture for optically-carried radiofrequency signals. The method exploits the exceptional coherence properties of rare-earth ion-doped materials, and leverages the well-established photon echo mechanism, widely used in quantum technologies. While our demonstration is conducted with a modest bandwidth, we identify the fundamental cause of this limitation and propose solutions for future scalability. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_05031 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Analog phase-sensitive time-reversal of optically-carried radiofrequency signals Llauze, Thomas Louchet-Chauvet, Anne Optics Atomic Physics Quantum Physics Achieving low-latency time-reversal of broadband radiofrequency signals is crucial for reliable communications in dynamic, uncontrolled environments. However, existing approaches are either digitally assisted -- making broadband extension challenging -- or limited to amplitude modulation. In this work, we report the very first experimental realization of a fully analog, phase-preserving time-reversal architecture for optically-carried radiofrequency signals. The method exploits the exceptional coherence properties of rare-earth ion-doped materials, and leverages the well-established photon echo mechanism, widely used in quantum technologies. While our demonstration is conducted with a modest bandwidth, we identify the fundamental cause of this limitation and propose solutions for future scalability. |
| title | Analog phase-sensitive time-reversal of optically-carried radiofrequency signals |
| topic | Optics Atomic Physics Quantum Physics |
| url | https://arxiv.org/abs/2504.05031 |