Research On The Protocol Of Blind Quantum Computation

The protocol of blind quantum computation is a new protocol for quantum computation security protocol that enables clients with insufficient quantum capabilities to delegate their quantum computation tasks to servers with full quantum capabilities.Blind quantum computation protocols can guarantee that the server cannot know the client’s input,output and the computation tasks.But the blind quantum computation protocols that have been proposed require that the client can prepare the qubits or has a large quantum register.In some protocols,multiple servers are required to complete tasks together.In order to reduce the quantum capability of the client,we propose a new protocol that the client can only make the measurement of Z and the measurement of Y.According to the protocol,the quantum server prepares the correction-brickwork state,and sends the modified qubits of the correction-brickwork state to the client.The client makes a measurement of Z or a measurement of Y on the modified qubits.The server then measures the normal qubits in the correctionbrickwork state in a certain order.If the server is honest,the client will receive the correct result and the server can’t get any information of the client.The blindness of this protocol is based on the no-signaling principle and the modified qubits.During the quantum computing process,the client makes the measurement of Z or Y on the modified qubits,which indirectly changes the measurement angle of the normal qubits,and gets the Clifford quantum gates.Therefore,the client does not need to send any information to control the server’s calculation process.Because there is no interaction between the client and the server,the server cannot know the computing task,thereby achieving the purpose of blind quantum computing.Compared to other protocols,the client of this protocol only needs to make the measurement of Z or Y without additional quantum capabilities.This greatly reduces the quantum requirements for the client and provides an easier way to implement blind quantum computing.