The Research On The Protocol And The Implementation Patten Of Blind Quantum Computation

In accordance with the theory of quantum mechanics, parallel computing can be obtained with characteristics of qubit superposition, which makes the quantum computing speed is much more faster than classic computer. In order to help classical computer to obtain quantum computation, the researchers put forward the concept of blind quantum computation. Blind quantum computation that combines notions of quantum cryptography and quantum computation can achieve the delegation of a quantum computation from a client with no quantum computational power to an untrusted quantum server, such that the client’s algorithm and data remain perfectly private.This article reviews the principles and unconditionally secure of blind quantum computation and introduces the physical implementation of blind quantum computation which is based on the technology of measurement-based computation.Analysis the existing blind quantum computation protocols, we propose universal single-server blind quantum computation protocol for classical client, which is based on the technologies of entanglement swapping and measurement based quantum computation. In the protocol, only one quantum server is involved and client only need the ability to access quantum channel. And in the modified protocol, with the help of a trusted center, the client can be completely classical. Trusted center prepare Bell state and sends the two particles of Bell state to the server and client respectively. The server implements quantum measurement according to the requirement of client, based on entanglement swapping technology, the server holds single qubits, which state is clear to the client, but the server side is unknown. At the end of the protocol, blind quantum computation can be obtained by the technology of measurement based quantum computation. The article makes an analysis security of this protocol from different aspects, the client can detect whether the server implements quantum measurement honestly. We analyze our blind quantum computation protocol and the existing universal blind quantum computation protocols in different aspects, such as the security of protocols, the demand for resources and utilization rate, and the complexity and feasibility. The feasibility of universal single-server classical client blind quantum computation protocol is high, which may become an important part of practical application.Finally, this paper explores the architecture of quantum computer, and presents a blind quantum computing application model which is called "cloud +EC ", and prospects the future development and application of blind quantum computing.