High-fidelity entanglement between a telecom photon and a room-temperature quantum memory
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arXiv
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866929760016269312 |
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| author | Wang, Yang Craddock, Alexander N. Mendoza, Jaeda M. Sekelsky, Rourke Flament, Mael Namazi, Mehdi |
| author_facet | Wang, Yang Craddock, Alexander N. Mendoza, Jaeda M. Sekelsky, Rourke Flament, Mael Namazi, Mehdi |
| contents | Entanglement distribution through existing telecommunication infrastructure is crucial for realizing large-scale quantum networks. However, distance limitations imposed by photon losses and the no-cloning theorem present significant challenges. Quantum repeaters based on entangled telecom wavelength photons and quantum memories offer a promising solution to overcome these limitations. In this work, we report an important milestone in quantum repeater architecture by demonstrating entanglement between a telecom-wavelength (1324 nm) photon and a room-temperature quantum memory with a fidelity up to 90.2%, using simple rubidium systems for both photon generation and storage. Furthermore, we achieve high-rate photon-memory entanglement generation of up to 1,200 Bell pairs per second with 80% fidelity. The technical simplicity and robustness of our room-temperature systems paves the way towards deploying quantum networks at scale in realistic settings. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_11564 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | High-fidelity entanglement between a telecom photon and a room-temperature quantum memory Wang, Yang Craddock, Alexander N. Mendoza, Jaeda M. Sekelsky, Rourke Flament, Mael Namazi, Mehdi Quantum Physics Entanglement distribution through existing telecommunication infrastructure is crucial for realizing large-scale quantum networks. However, distance limitations imposed by photon losses and the no-cloning theorem present significant challenges. Quantum repeaters based on entangled telecom wavelength photons and quantum memories offer a promising solution to overcome these limitations. In this work, we report an important milestone in quantum repeater architecture by demonstrating entanglement between a telecom-wavelength (1324 nm) photon and a room-temperature quantum memory with a fidelity up to 90.2%, using simple rubidium systems for both photon generation and storage. Furthermore, we achieve high-rate photon-memory entanglement generation of up to 1,200 Bell pairs per second with 80% fidelity. The technical simplicity and robustness of our room-temperature systems paves the way towards deploying quantum networks at scale in realistic settings. |
| title | High-fidelity entanglement between a telecom photon and a room-temperature quantum memory |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2503.11564 |