海冰对水下量子通信信道性能的影响  

Effect of sea ice on the performance of underwater quantum communication channel

作　　者：张秀再[1,2] 翟梦思 周丽娟 葛羽洁 Zhang Xiuzai;Zhai Mengsi;Zhou Lijuan;Ge Yujie(Jiangsu Province Atmospheric Environment and Equipment Technology Collaborative Innovation Center,Nanjing University of Information Science&Technology,Nanjing,Jiangsu 210044,China;School of Electronics and Information,Nanjing University of Information Science&Technology,Nanjing,Jiangsu 210044,China)

机构地区：[1]南京信息工程大学江苏省大气环境与装备技术协同创新中心,江苏南京210044 [2]南京信息工程大学电子与信息工程学院,江苏南京210044

出　　处：《光学学报》2023年第6期124-130,共7页Acta Optica Sinica

基　　金：国家自然科学基金青年科学基金(11504176,61601230);江苏省自然科学基金青年基金(BK20141004)。

摘　　要：为研究海冰对水下量子通信信道性能的影响,基于海冰在不同的密度、盐度下的吸收与散射特性,建立了海冰参数与消光系数之间的关系、光量子信号衰减模型;根据海冰在不同密度、盐度下的消光特性,分别建立海冰参数与信道利用率、量子密钥分配系统误码率、系统成码率之间的关系并进行数据仿真。理论分析与仿真结果可为海冰环境下的水下量子通信设计提供参考。Objective Quantum communication uses quantum state as information source to realize the effective transmission of the information it carries.It has the advantages of high security,high transmission speed and large communication capacity.It is a hotspot in the current communication field.However,when the equivalent optical signal is transmitted underwater,it will inevitably be affected by environmental factors,resulting in the degradation of transmission performance.Sea ice is one of the important factors that affect the transmission of light quantum signals under water.It is composed of a mixture of freshwater ice crystals,brine bubbles and bubbles containing salt.When the optical quantum signal is transmitted under water,the bubbles,brine bubbles and other microbial particles in the sea ice will absorb and scatter the optical signal,causing serious interference to the transmission of the optical quantum signal,resulting in reduced communication performance.The propagation,reflection and absorption of optical quantum signals in the sea ice are affected by the particles and sol organics condensed in the sea ice.However,the research on the influence of sea ice on the performance of underwater quantum communication channels has not been carried out.Therefore,according to the absorption and scattering characteristics of each component of sea ice,it is of great significance to analyze the extinction characteristics of the sea ice as a whole and study the influence of sea ice with different density and salinity on the link attenuation,channel utilization,and the bit error rate and bit rate of the quantum key distribution system.Methods Sea ice is composed of bubbles,brine bubbles and other particles.In order to study the influence of sea ice on the performance of underwater quantum communication channel,the absorption and scattering characteristics of each component of sea ice are analyzed;Secondly,based on the absorption and scattering characteristics of sea ice under different density and salinity,the relationship be

关 键 词：海洋光学 水下量子通信 海冰 链路衰减 信道利用率 系统误码率 系统成码率 

分 类 号：TN929.3[电子电信—通信与信息系统] O431.2[电子电信—信息与通信工程]