光纤色散对基于纠缠色散光学量子密钥分配性能的影响

Jing-Yuan Liu , Xu Liu , Wei Zhang , Yi-Dong Huang
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引用次数: 2

摘要

基于能量-时间纠缠光子对的色散光学量子密钥分配(DO-QKD)是一种重要的量子密钥分配方案。在DO-QKD中,光子到达时间用于密钥生成和安全性分析,光纤色散对光子到达时间的影响很大。在这项工作中,我们建立了基于纠缠的DO-QKD系统的理论模型,考虑了协议、物理过程(如光纤传输和单光子检测)以及安全测试分析。基于该理论模型,我们研究了传输光纤引入的色散对DO-QKD性能的影响。通过分析色散补偿的效益和成本,分别给出了在G.652和G.655光纤下的系统性能。结果表明,在校园网甚至城域网中,DO-QKD系统不需要色散补偿。然而,在光纤传输距离较长的DO-QKD系统中仍然需要它。
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Impact of fiber dispersion on the performance of entanglement-based dispersive optics quantum key distribution

Dispersive optics quantum key distribution (DO-QKD) based on energy-time entangled photon pairs is an important QKD scheme. In DO-QKD, the arrival time of photons is used in key generation and security analysis, which would be greatly affected by fiber dispersion. In this work, we established a theoretical model of the entanglement-based DO-QKD system, considering the protocol, physical processes (such as fiber transmission and single-photon detection), and the analysis of security tests. Based on this theoretical model, we investigate the influence of chromatic dispersion introduced by transmission fibers on the performance of DO-QKD. By analyzing the benefits and costs of dispersion compensation, the system performance under G.652 and G.655 optical fibers are shown, respectively. The results show that dispersion compensation is unnecessary for DO-QKD systems in campus networks and even metro networks. Whereas, it is still required in DO-QKD systems with longer fiber transmission distances.

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来源期刊
Journal of Electronic Science and Technology
Journal of Electronic Science and Technology Engineering-Electrical and Electronic Engineering
CiteScore
4.30
自引率
0.00%
发文量
1362
审稿时长
99 days
期刊介绍: JEST (International) covers the state-of-the-art achievements in electronic science and technology, including the most highlight areas: ¨ Communication Technology ¨ Computer Science and Information Technology ¨ Information and Network Security ¨ Bioelectronics and Biomedicine ¨ Neural Networks and Intelligent Systems ¨ Electronic Systems and Array Processing ¨ Optoelectronic and Photonic Technologies ¨ Electronic Materials and Devices ¨ Sensing and Measurement ¨ Signal Processing and Image Processing JEST (International) is dedicated to building an open, high-level academic journal supported by researchers, professionals, and academicians. The Journal has been fully indexed by Ei INSPEC and has published, with great honor, the contributions from more than 20 countries and regions in the world.
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