基于波分复用技术的参考系无关量子密钥分发

doi:10.3969/j.issn.1007-5461.2021.03.011

量子电子学报 ›› 2021, Vol. 38 ›› Issue (3): 346-353.doi: 10.3969/j.issn.1007-5461.2021.03.011

基于波分复用技术的参考系无关量子密钥分发

冯宝1;2∗, 赵子岩3 , 贾玮1;2, 窦天琦4 , 周芬4, 孙钟齐4 , 马海强4

1 南瑞集团有限公司(国网电力科学研究院有限公司), 江苏南京211106; 2 南京南瑞信息通信科技有限公司, 江苏南京211106; 3 国家电网有限公司信息通信技术分公司, 北京100761; 4 北京邮电大学理学院, 北京100876

收稿日期:2020-02-17 修回日期:2020-06-05 出版日期:2021-05-28 发布日期:2021-05-28
通讯作者: E-mail: nrgd−lw@163.com
作者简介:冯宝( 1984 - ), 山东青岛人, 高级工程师, 主要从事电力系统通信技术、量子保密通信技术方面的研究。 E-mail: nrgd−lw@163.com
基金资助:
Supported by National Key Research and Development Plan Fund Project (国家重点研发计划基金项目, 2018YFE0200603), Science and Technology Project of State Grid Corporation of China (国家电网有限公司科技项目, SGJSXT00DD JS1800068)

Reference-frame-independent quantum key distribution based on wavelength division multiplexing technology

FENG Bao1;2∗, ZHAO Ziyan3, JIA Wei1;2, DOU Tianqi4, ZHOU Fen4, SUN Zhongqi4, MA Haiqiang4

1 NARI Group Corporation/State Grid Electric Power Research Institute, Nanjing 211106, China; 2 NARI Information Communication Technology Co., Ltd., Nanjing 211106, China; 3 State Grid Information and Communication Branch, Beijing 100761, China; 4 College of Science, Beijing University of Posts and Telecommunication, Beijing 100876, China

Received:2020-02-17 Revised:2020-06-05 Published:2021-05-28 Online:2021-05-28

摘要/Abstract

摘要： 因参考系无关的量子密钥分发(RFI-QKD) 协议可以使量子密钥分发(QKD) 系统在没有参考系校准的情况下获得理想的密钥率和传输距离, 所以引起了广泛的关注。提出了一种基于波分复用(WDM) 技术的 RFI-QKD 协议。在该协议中, 发送方Alice 制备多路不同波长的信号, 利用WDM 技术传递给接收方Bob。Bob 在接收到光脉冲后, 利用波分解复用器将不同波长的信号分开后测量, 并结合诱骗态计算最终的安全密钥率。仿真结果表明: 基于WDM RFI-QKD 的密钥生成率受到复用路数与传输距离的影响, 随着复用路数的增加而增加, 因此运用WDM 技术是提高密钥率的一个有效方法。

关键词: 量子通信, 波分复用, 参考系无关, 量子密钥分发

Abstract: As reference-frame-independent quantum key distribution (RFI-QKD) protocol can make quantum key distribution (QKD) system obtain the ideal key rate and transmission distance without reference system calibration, thus it has attracted much attention recently. A new RFI-QKD protocol based on wavelength division multiplexing (WDM) is proposed. In this protocal, Alice prepares multiple signalsof different wavelengths and transmits them to the receiver Bob by using WDM technology. After receiving the optical pulse, Bob uses the wave decomposition multiplexer to separate the signals of different wavelengths and then measures them, and at last calculates the final security key rate by combining the decoy state. Simulation results show that the key generation rate based on WDM RFI-QKD is affected by multiplexing channel number and transmission distance, and it increases with the increase of multiplexing channel number. Therefore, introducing of WDM technology is an effective way to improve key rate.

Key words: quantum communication, wavelength division multiplexing, reference-frame-independent; quantum key distribution

中图分类号:

O431

冯宝, ∗, 赵子岩 , 贾玮, 窦天琦 , 周芬, 孙钟齐 , 马海强. 基于波分复用技术的参考系无关量子密钥分发[J]. 量子电子学报, 2021, 38(3): 346-353.

FENG Bao, ∗, ZHAO Ziyan, JIA Wei, DOU Tianqi, ZHOU Fen, SUN Zhongqi, MA Haiqiang. Reference-frame-independent quantum key distribution based on wavelength division multiplexing technology[J]. Chinese Journal of Quantum Electronics, 2021, 38(3): 346-353.

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基于波分复用技术的参考系无关量子密钥分发

Reference-frame-independent quantum key distribution based on wavelength division multiplexing technology

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