Quantum Teleportation And Quantum Dense Coding Based On Six-qubit State

Quantum computation and quantum information is the information processingtasks that can be accomplished using quantum mechanical systems，conclude quantummechanics computer science information theory and so on. Entangled in used formany regions in quantum dense coding and teleportation.The first and the second chapter, introduce quantum measurement, the definitionof quantum information and properties of quantum information.the role of thequantum entangled in quantum information., and the special states, such as Bellstate、GHZ state and W state.as the some,we introduce the definition of quantumteleportation and the development.The third chapter, we study the new application of the genuinely entangledsix-qubit state.we propose some schemes of quantum teleportation,we demonstratethat the genuinely entangled six-qubit can be used to realize the quantum teleportationof an arbitrary single-qubit state. For quantum teleportation of an arbitrarysingle-qubit state, our scheme is more simple and economic than the some quantumchannel. we study quantum electrodynamics with in the cavity, and propose thedense coding with six–particle cluster state in cavity QED, we realize the controlleddense coding in the QED by the six-particle cluster state, the scheme is used forquantum communication.