Networking Feasibility of Quantum Key Distribution Constellation Networks
Quantum key distribution constellation is the key to achieve global quantum networking. However, the networking feasibility of quantum constellation that combines satellite-to-ground accesses selection and inter-satellite routing is faced with a lack of research. In this paper, satellite-to-ground a...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Entropy |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1099-4300/24/2/298 |
| _version_ | 1797480469908946944 |
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| author | Junyong Wang Liang Chang Hongyu Chen Zhencai Zhu |
| author_facet | Junyong Wang Liang Chang Hongyu Chen Zhencai Zhu |
| author_sort | Junyong Wang |
| collection | DOAJ |
| description | Quantum key distribution constellation is the key to achieve global quantum networking. However, the networking feasibility of quantum constellation that combines satellite-to-ground accesses selection and inter-satellite routing is faced with a lack of research. In this paper, satellite-to-ground accesses selection is modeled as problems to find the longest paths in directed acyclic graphs. The inter-satellite routing is interpreted as problems to find a maximum flow in graph theory. As far as we know, the above problems are initially understood from the perspective of graph theory. Corresponding algorithms to solve the problems are provided. Although the classical discrete variable quantum key distribution protocol, i.e., BB84 protocol, is applied in simulation, the methods proposed in our paper can also be used to solve other secure key distributions. The simulation results of a low-Earth-orbit constellation scenario show that the Sun is the leading factor in restricting the networking. Due to the solar influence, inter-planar links block the network periodically and, thus, the inter-continental delivery of keys is restricted significantly. |
| first_indexed | 2024-03-09T22:01:29Z |
| format | Article |
| id | doaj.art-5820ff181b644d3c8541f6f028c683bc |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-03-09T22:01:29Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-5820ff181b644d3c8541f6f028c683bc2023-11-23T19:49:09ZengMDPI AGEntropy1099-43002022-02-0124229810.3390/e24020298Networking Feasibility of Quantum Key Distribution Constellation NetworksJunyong Wang0Liang Chang1Hongyu Chen2Zhencai Zhu3Innovation Academy for Microsatellites, Chinese Academy of Sciences, Shanghai 201203, ChinaInnovation Academy for Microsatellites, Chinese Academy of Sciences, Shanghai 201203, ChinaInnovation Academy for Microsatellites, Chinese Academy of Sciences, Shanghai 201203, ChinaInnovation Academy for Microsatellites, Chinese Academy of Sciences, Shanghai 201203, ChinaQuantum key distribution constellation is the key to achieve global quantum networking. However, the networking feasibility of quantum constellation that combines satellite-to-ground accesses selection and inter-satellite routing is faced with a lack of research. In this paper, satellite-to-ground accesses selection is modeled as problems to find the longest paths in directed acyclic graphs. The inter-satellite routing is interpreted as problems to find a maximum flow in graph theory. As far as we know, the above problems are initially understood from the perspective of graph theory. Corresponding algorithms to solve the problems are provided. Although the classical discrete variable quantum key distribution protocol, i.e., BB84 protocol, is applied in simulation, the methods proposed in our paper can also be used to solve other secure key distributions. The simulation results of a low-Earth-orbit constellation scenario show that the Sun is the leading factor in restricting the networking. Due to the solar influence, inter-planar links block the network periodically and, thus, the inter-continental delivery of keys is restricted significantly.https://www.mdpi.com/1099-4300/24/2/298decoy-state methodsatellite constellationlow-earth orbit satellitenetworking |
| spellingShingle | Junyong Wang Liang Chang Hongyu Chen Zhencai Zhu Networking Feasibility of Quantum Key Distribution Constellation Networks Entropy decoy-state method satellite constellation low-earth orbit satellite networking |
| title | Networking Feasibility of Quantum Key Distribution Constellation Networks |
| title_full | Networking Feasibility of Quantum Key Distribution Constellation Networks |
| title_fullStr | Networking Feasibility of Quantum Key Distribution Constellation Networks |
| title_full_unstemmed | Networking Feasibility of Quantum Key Distribution Constellation Networks |
| title_short | Networking Feasibility of Quantum Key Distribution Constellation Networks |
| title_sort | networking feasibility of quantum key distribution constellation networks |
| topic | decoy-state method satellite constellation low-earth orbit satellite networking |
| url | https://www.mdpi.com/1099-4300/24/2/298 |
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