Routing entanglement in the quantum internet
Remote quantum entanglement can enable numerous applications including distributed quantum computation, secure communication, and precision sensing. We consider how a quantum network—nodes equipped with limited quantum processing capabilities connected via lossy optical links—can distribute high-rat...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Springer Science and Business Media LLC
2021
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| Online Access: | https://hdl.handle.net/1721.1/129619 |
| _version_ | 1826202250485170176 |
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| author | Pant, Mihir Englund, Dirk R. |
| 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 Pant, Mihir Englund, Dirk R. |
| author_sort | Pant, Mihir |
| collection | MIT |
| description | Remote quantum entanglement can enable numerous applications including distributed quantum computation, secure communication, and precision sensing. We consider how a quantum network—nodes equipped with limited quantum processing capabilities connected via lossy optical links—can distribute high-rate entanglement simultaneously between multiple pairs of users. We develop protocols for such quantum “repeater” nodes, which enable a pair of users to achieve large gains in entanglement rates over using a linear chain of quantum repeaters, by exploiting the diversity of multiple paths in the network. Additionally, we develop repeater protocols that enable multiple user pairs to generate entanglement simultaneously at rates that can far exceed what is possible with repeaters time sharing among assisting individual entanglement flows. Our results suggest that the early-stage development of quantum memories with short coherence times and implementations of probabilistic Bell-state measurements can have a much more profound impact on quantum networks than may be apparent from analyzing linear repeater chains. This framework should spur the development of a general quantum network theory, bringing together quantum memory physics, quantum information theory, quantum error correction, and computer network theory. |
| first_indexed | 2024-09-23T12:04:33Z |
| format | Article |
| id | mit-1721.1/129619 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T12:04:33Z |
| publishDate | 2021 |
| publisher | Springer Science and Business Media LLC |
| record_format | dspace |
| spelling | mit-1721.1/1296192022-10-01T07:58:34Z Routing entanglement in the quantum internet Pant, Mihir Englund, Dirk R. Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Remote quantum entanglement can enable numerous applications including distributed quantum computation, secure communication, and precision sensing. We consider how a quantum network—nodes equipped with limited quantum processing capabilities connected via lossy optical links—can distribute high-rate entanglement simultaneously between multiple pairs of users. We develop protocols for such quantum “repeater” nodes, which enable a pair of users to achieve large gains in entanglement rates over using a linear chain of quantum repeaters, by exploiting the diversity of multiple paths in the network. Additionally, we develop repeater protocols that enable multiple user pairs to generate entanglement simultaneously at rates that can far exceed what is possible with repeaters time sharing among assisting individual entanglement flows. Our results suggest that the early-stage development of quantum memories with short coherence times and implementations of probabilistic Bell-state measurements can have a much more profound impact on quantum networks than may be apparent from analyzing linear repeater chains. This framework should spur the development of a general quantum network theory, bringing together quantum memory physics, quantum information theory, quantum error correction, and computer network theory. United States. Air Force. Office of Scientific Research. Multidisciplinary University Research Initiative (Grant FA9550-14-1-0052) United States. Office of Naval Research (Contract N00014-16-C-2069) 2021-02-02T12:11:51Z 2021-02-02T12:11:51Z 2019-03 2018-04 2020-12-14T18:02:36Z Article http://purl.org/eprint/type/JournalArticle 2056-6387 https://hdl.handle.net/1721.1/129619 Pant, Mihir et al. “Routing entanglement in the quantum internet.” npj Quantum Information, 5, 1 (April 2019): 25 © 2019 The Author(s) en 10.1038/S41534-019-0139-X 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 | Pant, Mihir Englund, Dirk R. Routing entanglement in the quantum internet |
| title | Routing entanglement in the quantum internet |
| title_full | Routing entanglement in the quantum internet |
| title_fullStr | Routing entanglement in the quantum internet |
| title_full_unstemmed | Routing entanglement in the quantum internet |
| title_short | Routing entanglement in the quantum internet |
| title_sort | routing entanglement in the quantum internet |
| url | https://hdl.handle.net/1721.1/129619 |
| work_keys_str_mv | AT pantmihir routingentanglementinthequantuminternet AT englunddirkr routingentanglementinthequantuminternet |