Design And Analyses On Reliable Three-party Quantum Network Communication Protocols

With the rapid development of multimedia technology, many communicationbusinesses need the support of a reliable, secure and efficient multicast networkcommunication. Multicast frame can be utilized to realize the reliablecommunication for an unreliable physica link in the classical multicast networkcommunication. However, the efficiency and security of the classical multicastnetwork are not high, which is difficult to realize the synchronous communication ofmultiparty. Quantum communication network compsed of classical communicationand quantum communication is used to improve the performance of the network,which is an inevitable trend of network development and practical use of quantum.Based on the existing classical multicast network communication protocols andquantum network communication protocols, the thesis is devoted to designing secure,efficient and reliable three-party quantum network communication protocols byutilizing the delocalized correlation of entangled states in quantum mechanics withquantum teleportation, remote state preparation and the transience of transferringquantum information. The main research results are achieved as follows:A method on transmission and detecton of quantum acknowledgment frame forthree-party is proposed. The receivers Bob and Charlie just perform Bellmeasurement and X basis measurement on their own particles to return qunatumacknowledgment (QACK) and quantum negative acknowledgment (QNACK)frames to the sender Alice, respectively. If quantum states can be destroyed, Alicecan simultaneously receive and deal with QACK and QNACK frames withappropriate coefficients, which can realize three-party synchronous communicationand reduce the propogation delay and processing delay on acknowledgment frame.A three-party quantum teleportation (QT) scheme and two three-party remotestate preparation (RSP) schemes are presented, two receivers can receive thequantum states from the sender simultaneously. The three-party QT scheme allowsAlice to teleport the quantum state0,1to Bob and Charlie simultaneously.Two RSP schemes are three-party RSP of a single particle quantum state and three-party RSP of two-particle entangled state. In the three-party RSP schemes, theprepared quantum states are01and0011and three classicalbits are required, which can reduce the classical communication costs effectively andresist intercept-resent attack and entanglement attack.Two reliable three-party quantum network communication protocols areproposed, namely, reliable three-party quantum network communication protocolsbased on GHZ state and reliable three-party quantum network communicationprotocols based on QT or RSP. QACK and QNACK frames are teleported viaquantum entanglement channel with the proposed method on transmission anddetecton of QACK frame for three-party. The returning of QACK and QNACKframes are accomplished, which decreases the transmission delay and improve thecommunication efficiency. In the reliable three-party quantum networkcommunication protocols based on QT or RSP, quantum frames composed of qubitsencoded into information more than that of classical bit are transferred and thetransparent transmission of quantum frame is introduced, which improves theamount and security of information. During the whole course of communications,the classical channels are only used to transmit the measurement message, thereforethe burdens of classical channels are reduced. Quantum frames are teleported byutilizing the three-party QT or three-party RSP scheme, which can ensure that tworeceivers can receive the quantum frame from the sender simultanesouly. It is shownthat the proposed protocols enhance the maximum throughout and the utilizationratio of the channel and improve the performance of network.