通信学报2025，Vol.46Issue(3)：258-273,16.DOI:10.11959/j.issn.1000-436x.2025054
基于具有极化和空模自由度的单光子的半量子密钥分配网络协议
Semiquantum key distribution network protocol with single photons in both polarization and spatial-mode degrees of freedom
摘要
Abstract
In order to make the communicants at different nodes of network use the semiquantum key distribution technol-ogy to constitute a secure semiquantum key distribution network as a whole,a novel semiquantum key distribution net-work protocol was proposed by using single photons with polarization and spatial-mode degrees of freedom.Only single photons rather than quantum entangled states were adopted as quantum resource,only single-photon measurements were required,and none of quantum entanglement swapping operations,quantum delay lines and Hadamard operations were needed.Within the proposed protocol,a participant with full quantum capabilities establishesd a private key with each semiquantum participant,and simultaneously helped two adjacent semiquantum participants to establish a private key be-tween them.The proposed protocol could be applied into semiquantum summation,semiquantum private comparison and semiquantum secret sharing,which meaned that it had extensive application potential.As the preparation,the measure-ment and the implementation with unitary operations on single photons with polarization and spatial-mode degrees of free-dom are all easy to realize under the present technologies,this protocol possesses the good practical feasibility.关键词
半量子密码/半量子密钥分配网络/单光子/极化自由度/空模自由度Key words
semiquantum cryptography/semiquantum key distribution network/single photon/polarization degree of freedom/spatial-mode degree of freedom分类
计算机与自动化引用本文复制引用
叶天语,叶腾琦,马鹏辉,李霞..基于具有极化和空模自由度的单光子的半量子密钥分配网络协议[J].通信学报,2025,46(3):258-273,16.基金项目
国家自然科学基金资助项目(No.62071430) （No.62071430）
浙江省大学生科技创新活动计划(新苗人才计划)基金资助项目(No.2024R408B082) The National Natural Science Foundation of China(No.62071430),Zhejiang Students'Technology and Innova-tion Program(No.2024R408B082) （新苗人才计划）
