Research On The Quantum Teleportation Of The Four-particle State Based On The Five-particle Cluster State

In the 21st century,where science and technology are developing at a high speed,human beings need more and more information.Information science has an irreplaceable role,especially in all aspects of people's lives and in the development of social civilization.People continue to increase research on information science,in this background,quantum informatics came into being.With the deepening of quantum computing research,quantum information processing technology has made revolutionary progress,and the development of quantum teleportation is the fastest.Quantum teleportation is the simplest of quantum communication.Quantum teleportation can also be called quantum long-distance transmission,quantum telemetry,and quantum teleportation is a special quantum information transmission technology.The technique uses scattered quantum entanglement and transforms some physical information to achieve the transfer of quantum states to arbitrary locations and is an irreplaceable communication method for transmitting quantum states,the distributed quantum computing and scalable quantum networks based on quantum teleportation.To perform quantum teleportation,a distant pair of information senders and information receivers firstly share a pair of entangled particles,The sender of the information will measure the unknown quantum state of the particle to be transmitted(this particle has nothing any relation with the entangled particle)and the entangled particle possessed by it.The result of the measurement is then sent to the information receiver,and the information receiver can restore the unknown quantum state information according to the measurement result sent by the information sender and then performing the corresponding correcting operation.The three elements of quantum teleportation are pre-distribution of entangled states,independent quantum source interference and pre-feedback.This paper mainly studies the quantum teleportation scheme of the special form of the four-particle state.The scheme is implemented as a quantum channel with a five-particle cluster state.This scheme uses the theory of quantum entanglement in quantum mechanics.In this scheme,the sender only needs to perform a five-particle Von Neumann projection measurement,and the receiver according to the sender's measurement results,the original four-qubit state is derived by performing some appropriate unitary transformation on its qubit.The solution proposed in this paper can cope well with the general eavesdropping method.