| A combination of quantum physics and information science yields a new subject, namely, quantum information science. Quantum informatics mainly includes preparation of quantum state, quantum teleportation, quantum communication, quantum photo-communication, quantum coding and quantum dense coding, quantum computation and so on. Quantum teleportation is one of the most strikingly developing fields in the quantum information science. It is very important in the field of quantum communication and quantum photo-communication to realize the teleportation of an unknown quantum state, especially the teleportation of many-qubit unknown quantum state.In this thesis, we systematically investigate the question of the realization of quantum teleportation of three bit unknown atom and light-field quantum state based on the complete quantum theories, and we attain the following results:(1) The new plan of teleportation of a three-qubit unknown atomic state through the Raman interaction of V-type three-level atom with a coherent state cavity-field.(2) The new plan of teleportation of a three-qubit unknown atomic state through the Raman interaction ofΛ-type three-level atom with a coherent state cavity-field.(3) The new plan of teleportation of a three-qubit unknown atomic state through non-resonant interaction ofΞ-type three-level atom with a coherent state cavity-field.(4) The new plan of teleporting superposition of even and odd coherent states of cavity field through the interaction of V-type three-level atom with the cavity-field.The above results has important theoretical guide values for people to realize from the experiments the teleportation of the three qubit unknown atomic state and the teleportation of the single-made superposition light-field et al. |
