一种全新的基于纠缠交换的量子中继策略
利用纠缠作为资源的量子通信协议具有安全性好、可靠性高、使用灵活等优势,具有广阔的发展前景,同时也对纠缠光子的保真度提出了一定的要求。提出了一种基于纠缠交换的量子中继策略,在远距离通信者之间设置多级中继,借助经典通信的辅助作用,通过节点间的纠缠交换和纠缠纯化操作为收发双方提供保真度稳定的长程纠缠连接。性能分析表明,通过合理控制中继级数和提高纠缠交换以及纠缠纯化的成功率,可以显著降低系统时延和提高系统吞吐量,为实现全球量子通信提供必不可少的纠缠资源。...
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| Published in | 电信科学 Vol. 32; no. 3; pp. 68 - 74 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
中国通信学会
01.03.2016
人民邮电出版社有限公司 西安邮电大学通信与信息工程学院,陕西西安,710061%西安邮电大学通信与信息工程学院,陕西西安710061 西北工业大学电子信息学院,陕西西安710072%西安电子科技大学综合业务网国家重点实验室,陕西西安,710071 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1000-0801 |
| DOI | 10.11959/j.issn.1000-0801.2016061 |
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| Summary: | 利用纠缠作为资源的量子通信协议具有安全性好、可靠性高、使用灵活等优势,具有广阔的发展前景,同时也对纠缠光子的保真度提出了一定的要求。提出了一种基于纠缠交换的量子中继策略,在远距离通信者之间设置多级中继,借助经典通信的辅助作用,通过节点间的纠缠交换和纠缠纯化操作为收发双方提供保真度稳定的长程纠缠连接。性能分析表明,通过合理控制中继级数和提高纠缠交换以及纠缠纯化的成功率,可以显著降低系统时延和提高系统吞吐量,为实现全球量子通信提供必不可少的纠缠资源。 |
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| Bibliography: | quantum communication; entanglement swapping; relay XU Min, NIE Min,YANG Guang, PEI Changxing（ 1. School of Communication and Information Engineering, Xi＇an University of Posts and Telecommunication, Xi＇an 710061, China 2. School of Electronics and Information, Northwestern Polytechnical University, Xi＇an 710072, China 3. State Key Laboratory of Integrated Service Networks, Xi＇an University of Electronic Science and Technology, Xi＇an 710071, China） 11-2103/TN Quantum protocols based on entanglement are known as information security, reliability, flexibility and a broad prospect in use. Meanwhile, the fidelity of photons is also required. A new quantum relay strategy was proposed. By setting multi-relays between distant correspondents and under the assistance of classical communications, the strategy can execute entanglement swapping and entanglement purification to provide the correspondents with remote entanglement connection of stable fidelity. Performance analysis shows that by reasonable control of relay ser |
| ISSN: | 1000-0801 |
| DOI: | 10.11959/j.issn.1000-0801.2016061 |