Research On The Effects Of Variable Ocean Climate Factors On The Performance Of Quantum Communication

Quantum communication technology is mainly based on the basic principles of quantum mechanics,the inseparable characteristics of single photons and the quantum non-cloning principle to ensure that information cannot be eavesdropped.Therefore quantum communication has a strong confidentiality,it is a hot spot in the field of communication.However,the research on the effects of oceanic climate factors on the performance of quantum communications have been studied so far.In this paper,through analyzing several common marine climate factors,the effects of ocean climate factors on optical quantum transmission under complex weather are studied.The external environmental impacts of quantum communication in specific environments are discussed,and the environmental characteristics for channel attenuation are analyzed,the quantitative relationship is studied,which provides a theoretical basis for the future research of quantum communication development,and lays a foundation for further research on how to realize the problem of Xinghai quantum communication.The innovations of this paper are mainly divided into:Firstly,the surge movement is a kind of nonlinear motion in non-uniform water flow.The mathematical model of the surge movement is established and its spectral characteristics are analyzed.Then,for the depolarization channel,the wave height and wavelength during the sloshing motion are proposed.The quantitative relationship between motion cycle and underwater quantum communication channel entanglement and channel capacity is analyzed,and the influence of bit error rate in quantum key distribution process is analyzed.The results show that quantum channel entanglement increases with the increase of surge wave wavelength and wave height.The degree and channel capacity are approximately exponentially decreasing.Then,according to the great influence of sea fog on the transmission of optical quantum signals,a mathematical model is established for the distribution of sea fog.For the depolarization channel,the quantitative relationship between the atomic droplet concentration and the quantum link attenuation in the sea fog phenomenon is given,and the quantitative relationship between the sea fog visibility and the link fidelity and channel establishment rate is analyzed.The effect of fidelity on the channel establishment rate is studied.The results show that as the droplet concentration and transmission distance increase in the sea fog phenomenon,the quantum link attenuation increases exponentially,and the depolarization channelfidelity gradually is decreasing.Finally,in order to research the impact of ocean tide on underwater quantum communication,the model of ocean tide is established,and then the cause of ocean tide and its evaluation method are analyzed.Especially for amplitude damping channel,the tide height of channel is analyzed.The influence of the quantum communication channel utilization rate is studied.The results show that as the tide tide increases,the longer the occurrence time,the smaller the quantum channel capacity,and the channel utilization rate is decreasing.