Research On Ten Quantum Bidirectional Chain Controlled And Asymmetric Quantum Teleportation

In recent years,with the endless emergence of various information security problems,the protection ability of traditional encryption algorithms is gradually weakened.Quantum informatics,as an emerging discipline derived from the cross combination of quantum mechanics and information science,is mainly composed of quantum communication and quantum computing.Quantum communication has obvious advantages compared with classical communication,breaking through the limitations of classical information in information capacity,security,region and other aspects.So quantum communication as a secret communication technology came into being.Quantum communication is based on the uncertainty principle,non-cloning principle and entangled state principle of quantum mechanics to ensure the safety of information transmission.Currently,there are two main application branches of Quantum communication: quantum key distribution and(Quantum Teleportation,QT).Quantum teleportation protocols studied in this paper fall within the scope of quantum communication and are the core elements of future global quantum communication networks.(1)Bidirectional-chain controlled quantum teleportation of multiple quantum based on a ten-qubit cluster stateThis paper proposes a kind of(Bidirectional-Chain Controlled Quantum Teleportation,BCCQT)protocol that uses a ten-qubit cluster state as a quantum channel and provides multiple quantum initial states between four parties has been proposed.The protocol carries out bidirectional chain state transfer between the communication participant Alice,Bob,Charlie and the communication controller David.After a series of processes such as multiple quantum state complex single conversion,sequential communication,reverse communication,single reshaping and complex reshaping,the initial multiple quantum state is finally reproduced,which proves that the protocol is feasible.And the security of the quantum communication process is guaranteed by the authority of the controller and the entanglement characteristics of the quantum channel.In theory,this protocol is based on BCQT protocol extension,and put forward a conjecture between n+1 square transfer and quantum channel,which has important reference value for BCQT research of multiple quantum states.(2)Asymmetric quantum teleportation based on multi-frequency and multi-controlBased on the many-to-one quantity relationship between communicating parties in Quantum Teleportation,this paper proposed that(Multi-frequency asymmetric quantum teleportation,MAQT)and the(Multi-Controller Quantum Teleportation protocol,MCQT)with enhanced fidelity.In the MAQT protocol,multiple frequencies logically represent multiple senders,and can be increased by an order of magnitude,while the receiver is only one,in order to complete the many-to-one asymmetric logical relationship.In MCQT protocol,by adding the first control party and improving other participants into the second control party,the two parties form a multi-control bit system.The participation of the multi-control party can effectively control the protocol’s state transmission process,and the quantum bit coefficient of the first control party can also control the fidelity of the receiver’s reshaped quantum state in the protocol.After feasibility analysis,the proposed two kinds of asymmetric quantum teleportation are feasible.This many-to-one asymmetry relationship breaks the one-to-one logical relationship of communication parties in the process of traditional quantum communication.This study provides a theoretical basis for a more complex multi-dimensional QT.