Research On Multiparty Blind Quantum Computation Protocol

Quantum computation is a new computational model,which is based on the principle of quantum mechanics to perform suitable operations on quantum information units to complete computations.It is also widely regarded as a computational model that may have a significant impact on the future.To enable users who do not have sufficient quantum capabilities to perform quantum computing tasks,Blind Quantum Computation(BQC)that allows users to delegate their quantum computing to remote quantum servers was proposed.The user's input,output and algorithm also can be kept private.In an actual network environment,it is sometimes necessary for two or more users to work together to calculate a certain function and obtain the result,and these users often do not want to reveal the privacy of their data.Therefore,extending the blind quantum computation to multiparty blind quantum computation will have an application prospect that cannot be ignored.This thesis focuses on the study of blind quantum computation,and then makes a deep research on multiparty blind quantum computation.The main content of this thesis is as follows:(1)Based on the existing protocols of blind quantum computation,we proposes a two-party quantum computation protocol,which allows two users who do not have enough quantum capability to complete two-party quantum computation with the help of an untrusted server.The proposed protocol can guarantee the privacy of a user even if another user cooperates with the server.(2)A triple-server multiparty blind quantum computation protocol is proposed,which combines the multiparty delegated quantum computing with the triple-server BQC protocol.The protocol can reduce the burden of the users in the multiparty delegated quantum computing protocol.(3)The triple-server multiparty blind quantum computation protocol is extended,and a double-server multiparty blind quantum computation protocol is also proposed.Then we proposed a multiparty blind quantum computation protocol which is more suitable for the environment in the network.