Control Power Analysis And Scheme Design Of Quantum Controlled Teleportation

As the network is increasingly developed,the global amount of information is also increasing,and the efficiency and security of information transmission have also been greatly challenged.Quantum teleportation is a remote transmission technology for quantum states by using the non locality of entangled states and the conversion of some physical in-formation.With the help of quantum entanglement,the transmitted quantum state is just like instantaneous transfer.It suddenly vanishes in one place and suddenly appears in another place.In information transmission,quantum teleportation has great potential and application prospect-s.In this paper,quantum bidirectional controlled teleportation,control analysis and protocol design based on quantum controlled teleportation are studied.The main contents are as follows:1.The principle and protocol design of bidirectional quantum controlled teleportation.Based on the three particle GHZ state as the transmission channel,we introduce the principle of controlled teleportation.We also introduce the principle of bidirectional controlled telepor-tation and bidirectional controlled teleportation scheme based on Bell state.While the Alice transfers the quantum state to the Bob,at the same time,Bob also transfers the quantum state to the Alice.2.Analysis of control power based on quantum controlled teleportation.we analyze and compare different particles based by using the four-particle Cluster state as the quantum communication channel.With the help of the uncontrolled fidelity,we get the different effects of two particles on the agreement.This is the first time using the control power as parameters to analysis particles respectively,in order to make the quantum information transfer protocol more efficient.At the same time,we also introduce the minimum control power of quantum controlled teleportation,and take the GHZ state as an example to illustrate the calculation method of the minimum controlled power.3.Quantum arbitration signing protocol.We propose a quantum arbitration signature scheme by using the three particle W state as the three party of the sender,the arbiter and the receiver to share the quantum channel.In the scheme,the sender and receiver must be under the authority of the arbiter to complete information transmission.The W states have stronger robustness than the GHZ states in the loss of the quantum bits.In the case of the loss of particles,the W states can maintain the quantum entanglement properties well.In order to avoid the Bob to accept the signature and information,then refuse to sign this agreement,we introduce the encryption operator and the public board in our scheme,which can improve the security of the protocol.