BackSatellite-based entanglement distribution and quantum teleportation with continuous variables
| dc.contributor.author | González Raya, Tasio | |
| dc.contributor.author | Pirandola, Stefano | |
| dc.contributor.author | Sanz Ruiz, Mikel  | |
| dc.date.accessioned | 2024-05-17T17:22:27Z | |
| dc.date.available | 2024-05-17T17:22:27Z | |
| dc.date.issued | 2024 | |
| dc.identifier.citation | Communications Physics 7 : (2024) // Article ID 126 | es_ES |
| dc.identifier.issn | 2399-3650 | |
| dc.identifier.uri | http://hdl.handle.net/10810/68023 | |
| dc.description.abstract | Advances in satellite quantum communications aim at reshaping the global telecommunication network by increasing the security of the transferred information. Here, we study the effects of atmospheric turbulence in continuous-variable entanglement distribution and quantum teleportation in the optical regime between a ground station and a satellite. More specifically, we study the degradation of entanglement due to various error sources in the distribution, namely, diffraction, atmospheric attenuation, turbulence, and detector inefficiency, in both downlink and uplink scenarios. As the fidelity of a quantum teleportation protocol using these distributed entangled resources is not sufficient, we include an intermediate station for either state generation, or beam refocusing, in order to reduce the effects of atmospheric turbulence and diffraction, respectively. The results show the feasibility of free-space entanglement distribution and quantum teleportation in downlink paths up to the LEO region, but also in uplink paths with the help of the intermediate station. Finally, we complete the study with microwave-optical comparison in bad weather situations, and with the study of horizontal paths in ground-to-ground and inter-satellite quantum communication. | es_ES |
| dc.description.sponsorship | T.G.-R. and M.S. acknowledge financial support from the Basque Government through Grant No. IT1470-22 and from the Basque Government QUANTEK project under the ELKARTEK program (KK-2021/00070), the Spanish Ramón y Cajal Grant No. RYC-2020-030503-I, project Grant No. PID2021-125823NA-I00 funded by MCIN/AEI/10.13039/501100011033 and by “ERDF A way of making Europe” and “ERDF Invest in your Future”, as well as from the project QMiCS (Grant No. 820505) and the HORIZON-CL4-2022-QUANTUM-01-SGA project 101113946 OpenSuperQPlus100 of the EU Flagship on Quantum Technologies, and the EU FET-Open projects Quromorphic (828826) and EPIQUS (899368). The authors also acknowledge the financial support received from the IKUR Strategy under the collaboration agreement between Ikerbasque Foundation and BCAM on behalf of the Department of Education of the Basque Government. This work has also been financially supported by the Ministry of Economic Affairs and Digital Transformation of the Spanish Government through the QUANTUM ENIA project call - Quantum Spain project, and by the European Union through the Recovery, Transformation and Resilience Plan - NextGenerationEU within the framework of the Digital Spain 2026 Agenda. S.P. Acknowledges funding from the EU via CiViQ (grant agreement no. 820466) and QUARTET (Grant Agreement No. 862644), and EPSRC via the Quantum Communications Hub (Grant number EP/T001011/1). | es_ES |
| dc.language.iso | eng | es_ES |
| dc.publisher | Nature | es_ES |
| dc.rights | info:eu-repo/semantics/openAccess | es_ES |
| dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
| dc.title | Satellite-based entanglement distribution and quantum teleportation with continuous variables | es_ES |
| dc.type | info:eu-repo/semantics/article | es_ES |
| dc.rights.holder | © The Author(s) 2024. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ | es_ES |
| dc.rights.holder | Atribución 3.0 España | * |
| dc.relation.publisherversion | https://www.nature.com/articles/s42005-024-01612-x | es_ES |
| dc.identifier.doi | 10.1038/s42005-024-01612-x | |
| dc.departamentoes | Química física | es_ES |
| dc.departamentoeu | Kimika fisikoa | es_ES |
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