A quantum router architecture for high-fidelity entanglement flows in quantum networks
<jats:title>Abstract</jats:title><jats:p>The past decade has seen tremendous progress in experimentally realizing the building blocks of quantum repeaters. Repeater architectures with multiplexed quantum memories have been proposed to increase entanglement distribution rates, but a...
| Principais autores: | , , , , |
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| Outros Autores: | |
| Formato: | Artigo |
| Idioma: | English |
| Publicado em: |
Springer Science and Business Media LLC
2022
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| Acesso em linha: | https://hdl.handle.net/1721.1/144033 |
| _version_ | 1826196249299124224 |
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| author | Lee, Yuan Bersin, Eric Dahlberg, Axel Wehner, Stephanie Englund, Dirk |
| author2 | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science |
| author_facet | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Lee, Yuan Bersin, Eric Dahlberg, Axel Wehner, Stephanie Englund, Dirk |
| author_sort | Lee, Yuan |
| collection | MIT |
| description | <jats:title>Abstract</jats:title><jats:p>The past decade has seen tremendous progress in experimentally realizing the building blocks of quantum repeaters. Repeater architectures with multiplexed quantum memories have been proposed to increase entanglement distribution rates, but an open challenge is to maintain entanglement fidelity over long-distance links. Here, we address this with a quantum router architecture comprising many quantum memories connected in a photonic switchboard to broker entanglement flows across quantum networks. We compute the rate and fidelity of entanglement distribution under this architecture using an event-based simulator, finding that the router improves the entanglement fidelity as multiplexing depth increases without a significant drop in the entanglement distribution rate. Specifically, the router permits channel-loss-invariant fidelity, i.e. the same fidelity achievable with lossless links. Furthermore, this scheme automatically prioritizes entanglement flows across the full network without requiring global network information. The proposed architecture uses present-day photonic technology, opening a path to near-term deployable multi-node quantum networks.</jats:p> |
| first_indexed | 2024-09-23T10:23:55Z |
| format | Article |
| id | mit-1721.1/144033 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T10:23:55Z |
| publishDate | 2022 |
| publisher | Springer Science and Business Media LLC |
| record_format | dspace |
| spelling | mit-1721.1/1440332023-02-06T19:38:45Z A quantum router architecture for high-fidelity entanglement flows in quantum networks Lee, Yuan Bersin, Eric Dahlberg, Axel Wehner, Stephanie Englund, Dirk Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Research Laboratory of Electronics <jats:title>Abstract</jats:title><jats:p>The past decade has seen tremendous progress in experimentally realizing the building blocks of quantum repeaters. Repeater architectures with multiplexed quantum memories have been proposed to increase entanglement distribution rates, but an open challenge is to maintain entanglement fidelity over long-distance links. Here, we address this with a quantum router architecture comprising many quantum memories connected in a photonic switchboard to broker entanglement flows across quantum networks. We compute the rate and fidelity of entanglement distribution under this architecture using an event-based simulator, finding that the router improves the entanglement fidelity as multiplexing depth increases without a significant drop in the entanglement distribution rate. Specifically, the router permits channel-loss-invariant fidelity, i.e. the same fidelity achievable with lossless links. Furthermore, this scheme automatically prioritizes entanglement flows across the full network without requiring global network information. The proposed architecture uses present-day photonic technology, opening a path to near-term deployable multi-node quantum networks.</jats:p> 2022-07-25T17:25:43Z 2022-07-25T17:25:43Z 2022-12 2022-07-25T17:23:29Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/144033 Lee, Yuan, Bersin, Eric, Dahlberg, Axel, Wehner, Stephanie and Englund, Dirk. 2022. "A quantum router architecture for high-fidelity entanglement flows in quantum networks." npj Quantum Information, 8 (1). en 10.1038/s41534-022-00582-8 npj Quantum Information Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf Springer Science and Business Media LLC Nature |
| spellingShingle | Lee, Yuan Bersin, Eric Dahlberg, Axel Wehner, Stephanie Englund, Dirk A quantum router architecture for high-fidelity entanglement flows in quantum networks |
| title | A quantum router architecture for high-fidelity entanglement flows in quantum networks |
| title_full | A quantum router architecture for high-fidelity entanglement flows in quantum networks |
| title_fullStr | A quantum router architecture for high-fidelity entanglement flows in quantum networks |
| title_full_unstemmed | A quantum router architecture for high-fidelity entanglement flows in quantum networks |
| title_short | A quantum router architecture for high-fidelity entanglement flows in quantum networks |
| title_sort | quantum router architecture for high fidelity entanglement flows in quantum networks |
| url | https://hdl.handle.net/1721.1/144033 |
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