Design And Analysis Of Quantum Operation Teleportation And Sharing Protocol

Quantum communication is a new way of communication using quantum en-tanglement effect,which is a new research field combining quantum theory and information theory.According to the basic principle of quantum mechanics,quantum communication has the characteristics of high efficiency and absolute security.Therefore,it has become a hot topic in the field of quantum physics and information science in the world.The new interdisciplinary subject,which has been developed in the past thirty years,has gradually moved from theory to experiment and has been developed to practical application.This paper studies the related protocols of quantum communication in quantum operation teleportation and quantum oper-ation sharing.Using linear algebra as a tool and using different quantum states as quantum channels,three bidirectional quantum operation teleportation and two quantum operation shar-ing protocols are designed.The thesis is divided into six chapters.The main contents are as follows:1.Bidirectional quantum operation teleportation.In recent years,bidirectional quantum communication has become a hot topic,and the purpose of bidirectional teleportation is to lay a foundation for the quantum operation of the network.Firstly,the quantum operation teleportation scheme is briefly introduced.Secondly,three bidirectional quantum operation teleportation protocols are designed based on three different quantum channels.Finally,extend the third protocol by putting forward a bidirectional operation teleportation scheme which using multi-particle cluster states as quantum channels.2.Quantum operation sharing.On the basis of the idea of quantum operation teleportation,the number of receiving system is increased,and a four party operation sharing scheme based on seven-qubit Brown state is designed.The advantage of the scheme is that all three recipients may succeed in receiving the quantum information sent by the sender.We further extend the quantum channel to the Brown state of multi-particles,and transform it into seven particles by unitary operations and a series of Bell measurements.Then the operation sharing can be realized perfectly.3.The effect of noise on operation teleportation.In fact,a real quantum system is affected by the surrounding environment,especially the noise environment.In this paper,based on the operation teleportation schemes under ideal environment,the effect of phase damping noise and amplitude damping noise on bidirectional quantum teleportation scheme is analyzed.By calculating and combining the numerical analysis with Matlab,all particles in the quantum channel of three schemes are subjected to two kinds of noise are discussed respectively.4.Analysis of experimental feasibility,certainty,safety and efficiency.First of all,all the protocols designed in this paper have experimental feasibility,and can be successfully imple-mented with the probability of 100%.Secondly,security is a factor that must be considered in the process of quantum communication,all protocols in this article can easily break out out-sider's attack and insider's cheating.Finally,the efficiency of some of the schemes is analyzed,then the general formula of efficiency is obtained.