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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/2506.00194 |
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| _version_ | 1866912805404278784 |
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| author | Vinet, Stéphane England, Duncan Xu, Chang-qing Jennewein, Thomas |
| author_facet | Vinet, Stéphane England, Duncan Xu, Chang-qing Jennewein, Thomas |
| contents | We experimentally demonstrate a reconfigurable quantum network architecture suitable for integrating satellite links in metropolitan quantum networks. The network architecture is designed such that once a satellite is in range, it is configured in a multipoint-to-point topology where all ground nodes establish entanglement with the satellite receiver using time multiplexing to optimize long-distance transmission. Otherwise, the satellite up-link can be rerouted to the ground nodes to form a pair-wise ground network. Leveraging both the time and frequency correlations of our photon-pair source, we demonstrate an increased coincidence-to-accidental ratio without additional resource overhead in a five-node network. To contextualize these experimental findings, we project their performance in a quantum key distribution scenario and outline a feasible route toward field deployment, using integrated photonics to enable network integration of up to 72 users. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_00194 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Demonstration of a reconfigurable quantum network architecture suitable for ground-to-space communication Vinet, Stéphane England, Duncan Xu, Chang-qing Jennewein, Thomas Quantum Physics We experimentally demonstrate a reconfigurable quantum network architecture suitable for integrating satellite links in metropolitan quantum networks. The network architecture is designed such that once a satellite is in range, it is configured in a multipoint-to-point topology where all ground nodes establish entanglement with the satellite receiver using time multiplexing to optimize long-distance transmission. Otherwise, the satellite up-link can be rerouted to the ground nodes to form a pair-wise ground network. Leveraging both the time and frequency correlations of our photon-pair source, we demonstrate an increased coincidence-to-accidental ratio without additional resource overhead in a five-node network. To contextualize these experimental findings, we project their performance in a quantum key distribution scenario and outline a feasible route toward field deployment, using integrated photonics to enable network integration of up to 72 users. |
| title | Demonstration of a reconfigurable quantum network architecture suitable for ground-to-space communication |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2506.00194 |