The Study Of The Controlled Teleportation

Information science plays a key role in improving the life of people and the progress of civilization. We experience an ever-increasing need for technology that allows us to share information in a secure, efficient and reliable way. Theoretical research in the information science has identified that quantum methods are better than classical counter—parts.Quantum information science is a new discipline, which is combination of quantum mechanics and information science. Quantum computation and quantum communication are two important branches of it. and embraces quantum teleportation, quantum dense coding, quantum key distribution and so on. Controlled quantum teleportation is one of the most attractive fields in quantum communication.The thesis consists of five chapters. In the first chapter, we depict the development history and the latest progress in the field of quantum teleportation. In the second chapter, we introduce a basic quantum mechanics theory of controlled teleportation. In the third chapter, we introduce origin of controlled teleportation. In the forth chapter, we discusses the schemes of controlled teleportation of arbitrary superposition states of multi-qudit systems. Finally, we do the work of this paper, a simple conclusion, and quantum teleportation state made the prospect of a simple vision.