Research On Blind Quantum Computing Protocol Based On Insecure Channel

In recent years,with the continuous development of computer systems,more and more research has focused on quantum computing.Quantum computing combines quantum theory and computer science to provide a new type of information processing for computing.This thesis mainly studies blind quantum computing in quantum computing.Blind quantum computing is an important research direction in quantum computing.Customers use blind quantum computing to entrust servers to complete complex quantum computing tasks.During the commissioning process,the client has only limited computing power,but can use the server to complete a series of quantum operations,greatly improving computing efficiency.The blind quantum computing commissioning method makes the channel transmission have an important impact on the calculation results.In this thesis,the blind quantum computing under insecure channel transmission is studied in depth.Insecure channel refers to a channel that cannot carry out correct quantum transmission.It is divided into two directions: internal noise and external attack.The specific research is as follows:1.The first research content is the unsafe internal noise channel,that is,the quantum noise channel caused by the transmission of qubits due to its own environmental impact.Based on the blind quantum computing protocol,this thesis classifies the quantum noise generated by environmental impact.For the bit flip channel environment,a blind quantum computing protocol for bit flip error channel under single quantum noise is proposed,which proves the safety and feasibility of the protocol.At the same time,for single-qubit phase-reversal error noise,a blind quantum computing protocol for phase-reversal error channel is proposed and security proof is made.The two protocols are compared with the classical blind quantum computing protocol to confirm the advantages of the protocol in terms of redundancy and computation.The blind quantum computing protocol for bit flip error channel was simulated on the quantum platform,and the simulation results verified the correctness of the protocol in the experimental environment.2.The second research content is an insecure external attack channel,that is,a quantum noise channel that disrupts transmission security due to a third-party attack.In a third-party attack environment with unsecured channels,thesis designs a role-blind quantum computing model for unsecured attack channels based on the role control protocol of cloud computing,and analyzes the feasibility and security of the model.Aiming at the role-blind quantum computing model and using quantum trap state measurement,the roles of single channel blind quantum computing and role-dual server blind quantum computing protocols for unsecured attack channels are proposed prove.