Study On Teleporting An Unknown Quantum State Between Atom And Cavity-Field Via Raman Interaction

Quantum information as a newly emerging subject didn't rise in the world until 1994.Though the time is short, a series of important breakthroughs have been gained. Quantum information mainly includes quantum computation and quantum communication.In this thesis, we mainly introduce kinds of Jaynes-Cummings models. And we also introduce basic concept and basic theory on quantum teleportation. It is involved that quantum bit, quantum entangled state, quantum teleportation, Schr?dinger cat state and so on. In this thesis, we investigate realization on quantum teleportation of unknown atom or light-field quantum state via all quantum theories. Namely through interaction between atom and cavity-field, we may find out corresponding Jaynes-Cummings model or extend Jaynes-Cummings model and choose propriety parameter, then come true all kinds of light-field or atom teleportation. Namely we bring forward a scheme of light-field Schr?dinger cat state quantum teleportation via three different varieties models of Raman interaction between an atom and cavity-field; We teleportate a bit unknown atomic state via the Raman interaction of atom with acoherent state cavity-field; Then we teleportate a two-qubit unknown atomic state through the Raman interaction of atom with a coherent state cavity-field.