- 必威体育下载

姓名
邮箱
手机号码
标题
留言内容
验证码

摘要

量子密钥分发(quantum key distribution, QKD)技术因在确保通信安全方面的潜力而备受关注, 但其在大规模网络中的应用受限于量子资源的稀缺性和低效的利用率. 尤其在Ekert91协议中, 尽管利用了纠缠对进行密钥生成, 实际参与密钥生成的纠缠对数量有限, 导致资源利用率不高. 为了克服这一挑战, 本文提出一种基于多尺度纠缠重整化假设(multiscale entanglement renormalization ansatz, MERA)的QKD优化方案, 以提高纠缠资源的利用效率. 该方案利用MERA的分层结构和多体态压缩特性, 有效减少量子存储需求, 并显著提升纠缠对的利用率. 实验模拟显示, 在相同的加密请求(1024比特)和物理条件下, 与传统方法相比, 本文的方案节省了124151对纠缠资源, 既显著提高了资源的利用效率, 又未降低密钥生成过程的安全性, 有助于推动QKD技术在资源受限的环境中进一步发展和应用.

关键词:

Abstract

Quantum key distribution (QKD) is a pivotal technology in the field of secure communication by using the principles of quantum mechanics to implement theoretically unbreakable encryption. However, QKD faces significant challenges in achieving large-scale deployment. The primary hurdle lies in the scarcity of quantum resources, especially entangled photon pairs, which are fundamental to protocols such as Ekert91. In traditional QKD implementations, only a small potion of the generated entanglement pairs contribute to generating the original key, resulting in lower efficiency and resource waste. Resolving this limitation is crucial to the advancement and scalability of QKD networks. This paper introduces an innovative approach to QKD by integrating the multiscale entanglement renormalization ansatz (MERA), a technique which is originally developed for many-body quantum systems. By utilizing MERA's hierarchical structure, the proposed method not only improves the efficiency of entanglement distribution but also reduces the consumption of quantum resources. Specifically, MERA compresses many-body quantum states into lower-dimensional representations, allowing for the transmission and storage of entanglement in a more efficient manner. This compression significantly reduces the number of qubits required, optimizing both entanglement utilization and storage capacity in quantum networks. To evaluate the performance of this method, we conduct simulations under standardized conditions. In the simulation, a 1024-bit encryption request, an 8% error rate, an average path length of 4 hops in the quantum network, and a 95% success rate for link entanglement generation and entanglement swapping operations are assumed. These parameters reflect the real physical conditions in contemporary QKD networks. The results demonstrate that compared with traditional QKD protocols, the MERA-based approach saves 124151 entangled pairs, which is impressive. This significant reduction in resource consumption indicates the potential application of MERA in improving the efficiency of QKD systems without sacrificing security. Importantly, the security of the key exchange process remains intact, for the method inherently adheres to the principles of quantum mechanics, particularly the no-cloning theorem and the use of randomness in the decompression layer. Some conclusions can be drawn below. The MERA not only enhances the scalability of QKD by optimizing quantum resource allocation, but also maintains the necessary security guarantees for practical cryptographic applications. By integrating MERA into existing QKD frameworks, we can significantly reduce the resource overhead and make large-scale, secure quantum communication more feasible. These findings contribute a new dimension to the field of quantum cryptography, indicating that advanced quantum many-body techniques like MERA have the potential to unlock the full potential of quantum networks in real world.

Keywords:

quantum key distribution/
multi-scale entanglement renormalization ansatz/
resource utilization/
security

作者及机构信息

通信作者:赖红,hlai@swu.edu.cn

基金项目:国家自然科学基金(批准号: 61702427, 62301454)、重庆市自然科学基金(批准号: CSTB2022NSCQ-MSX0749, CSTB2023NSCQ-MSX0739)、中国国家留学基金委(批准号: 202306990061)和西南大学2022年校级教改项目(批准号: 2022JY086) 资助的课题.

Authors and contacts

Corresponding author:Lai Hong,hlai@swu.edu.cn

Funds:Project supported by the National Natural Science Foundation of China (Grant Nos. 61702427, 62301454), the Natural Science Foundation of Chongqing, China (Grant Nos. CSTB2022NSCQ-MSX0749, CSTB2023NSCQ-MSX0739), the Foundation of China Scholarship Council (Grant No. 202306990061), and the Southwest University’s 2022 School-Level Teaching Reform Program, China (Grant No. 2022JY086).

文章全文: translate this paragraph

参考文献

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]
[29]
[30]
[31]
[32]
[33]
[34]
[35]
[36]
[37]
[38]
[39]

施引文献

下载: 全尺寸图片幻灯片

属性	描述	取值范围
S	发送方	N/A
D	接收方	N/A
k	需求量	[1024, 4096]
P	优先级	[1, 5]
$ \Delta t $	可接受时延	[1, 60]

下载: 导出CSV

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]
[29]
[30]
[31]
[32]
[33]
[34]
[35]
[36]
[37]
[38]
[39]

[1]	罗一振, 马洛嘉, 孙铭烁, 吴思睿, 邱丽华, 王禾, 王琴.基于监控标记单光子源的量子密钥分发协议. 必威体育下载 , 2024, 73(24): 240302.doi:10.7498/aps.73.20241269
[2]	陈越, 刘长杰, 郑伊佳, 曹原, 郭明轩, 朱佳莉, 周星宇, 郁小松, 赵永利, 王琴.多域跨协议量子网络的域间密钥业务按需提供策略. 必威体育下载 , 2024, 73(17): 170301.doi:10.7498/aps.73.20240819
[3]	贺英, 王天一, 李莹莹.线性光学克隆机改进的离散极化调制连续变量量子密钥分发可组合安全性分析. 必威体育下载 , 2024, 73(23): .doi:10.7498/aps.20241094
[4]	贺英, 王天一, 李莹莹.线性光学克隆机改进的离散极化调制连续变量量子密钥分发可组合安全性分析. 必威体育下载 , 2024, 73(23): 230303.doi:10.7498/aps.73.20241094
[5]	周江平, 周媛媛, 周学军.非对称信道相位匹配量子密钥分发. 必威体育下载 , 2023, 72(14): 140302.doi:10.7498/aps.72.20230652
[6]	周阳, 马啸, 周星宇, 张春辉, 王琴.实用化态制备误差容忍参考系无关量子密钥分发协议. 必威体育下载 , 2023, 72(24): 240301.doi:10.7498/aps.72.20231144
[7]	朱佳莉, 曹原, 张春辉, 王琴.实用化量子密钥分发光网络中的资源优化配置. 必威体育下载 , 2023, 72(2): 020301.doi:10.7498/aps.72.20221661
[8]	孟杰, 徐乐辰, 张成峻, 张春辉, 王琴.标记单光子源在量子密钥分发中的应用. 必威体育下载 , 2022, 71(17): 170304.doi:10.7498/aps.71.20220344
[9]	陈以鹏, 刘靖阳, 朱佳莉, 方伟, 王琴.机器学习在量子通信资源优化配置中的应用. 必威体育下载 , 2022, 71(22): 220301.doi:10.7498/aps.71.20220871
[10]	叶炜, 郭迎, 夏莹, 钟海, 张欢, 丁建枝, 胡利云.基于量子催化的离散调制连续变量量子密钥分发. 必威体育下载 , 2020, 69(6): 060301.doi:10.7498/aps.69.20191689
[11]	周飞, 雍海林, 李东东, 印娟, 任继刚, 彭承志.基于不同介质间量子密钥分发的研究. 必威体育下载 , 2014, 63(14): 140303.doi:10.7498/aps.63.140303
[12]	徐兵杰, 唐春明, 陈晖, 张文政, 朱甫臣.利用无噪线性光放大器增加连续变量量子密钥分发最远传输距离. 必威体育下载 , 2013, 62(7): 070301.doi:10.7498/aps.62.070301
[13]	胡华鹏, 张静, 王金东, 黄宇娴, 路轶群, 刘颂豪, 路巍.双协议量子密钥分发系统实验研究. 必威体育下载 , 2008, 57(9): 5605-5611.doi:10.7498/aps.57.5605
[14]	张静, 王发强, 赵峰, 路轶群, 刘颂豪.时间和相位混合编码的量子密钥分发方案. 必威体育下载 , 2008, 57(8): 4941-4946.doi:10.7498/aps.57.4941
[15]	陈霞, 王发强, 路轶群, 赵峰, 李明明, 米景隆, 梁瑞生, 刘颂豪.运行双协议相位调制的量子密钥分发系统. 必威体育下载 , 2007, 56(11): 6434-6440.doi:10.7498/aps.56.6434
[16]	陈杰, 黎遥, 吴光, 曾和平.偏振稳定控制下的量子密钥分发. 必威体育下载 , 2007, 56(9): 5243-5247.doi:10.7498/aps.56.5243
[17]	冯发勇, 张强.基于超纠缠交换的量子密钥分发. 必威体育下载 , 2007, 56(4): 1924-1927.doi:10.7498/aps.56.1924
[18]	林青群, 王发强, 米景隆, 梁瑞生, 刘颂豪.基于随机相位编码的确定性量子密钥分配. 必威体育下载 , 2007, 56(10): 5796-5801.doi:10.7498/aps.56.5796
[19]	赵峰, 路轶群, 王发强, 陈霞, 李明明, 郭邦红, 廖常俊, 刘颂豪.基于微弱相干脉冲稳定差分相位量子密钥分发. 必威体育下载 , 2007, 56(4): 2175-2179.doi:10.7498/aps.56.2175
[20]	马海强, 李亚玲, 赵环, 吴令安.基于双偏振分束器的量子密钥分发系统. 必威体育下载 , 2005, 54(11): 5014-5017.doi:10.7498/aps.54.5014

计量

文章访问数:286
PDF下载量:7
被引次数:0

搜索

留言板