Theoretical Researches On Quantum Teleportation Of Arbitrary Three-particle State

In twenty-first century, with the rapid development of science and technology,information has become one ofthe three resourcesfor humansurvival, humandemandfor information is rising day by day, information science also plays an important rolein improving the material life of human beings and promoting the development ofsocial civilization, people are constantly committed to the research development ofinformation science, then a new subject——quantum informatics arise at the historicmoment. It goes beyond the bounds oftraditionalclassic informationtheory, and aloneas a new discipline which fuse quantum mechanics theory into classic informatics.Quantum informatics covers several aspects of quantum communication, quantumcryptography, quantum computer. Quantum communication which is mainly on theresearch of quantum teleportation, quantum cryptography communication, quantumdense coding, etc. Dueto the quantumteleportation’s safetyand reliability is relativelyhigh. It not onlycantransmit large capacityof informationbut also cansave resources.So it attractsmanyresearchers attention intheresearchofquantumcommunication. Atpresent, there are many quantum teleportation scheme.After describing the quantum teleportation background, current situation andprospect significance, article selects three three-particle teleportation schemes are anexample analysis in the current variety of multi-particle states of quantumteleportation schemes. Followed by the analysis of the previous questions aboutthree-particle W state quantum teleportation scheme, the article presents a new andsimple three-particle W state probability controlled teleportation scheme, which onlyusing a non-maximally entangled EPR states and a non-maximally entangled GHZstate as the quantum channel. In order to reconstruct the original state, with the help ofcontroller, the receiver can faithfully reconstruct the original state by performingrelevant unitary transformations and introducing several auxiliary particles. Then,based on the clusters in the two particle states of quantum secret sharing scheme, theapplication of clusters in three particle states is proposed in this paper, namely usingtwo four-qubit cluster state as the quantum channel, between the three parties share anarbitrary three-particle state. Collapse operator was introduced to the scheme, whichmaking the operate programs ofthe process more easier. In this scheme, anyone ofthetwo agents has the access to reconstruct the original if he/she collaborates with theother one. This sharing process is more secure and reliable.With its superior characteristics, quantum teleportation occupies an importantposition in quantum communication. It provides reliable physical foundation fordevelopment and reform of the future information science, and it also provides thepremise of feasibility to achieve global quantum communication networks. Soengaged quantum teleportation research is the requirements of the progress ofscience-technology and it also the requirements of the times.