Study For Schemes Of Teleportation One-particle State By Four-dimensional Entangled State As The Quantum Channel

Quantum informatics has the advantage that classic informatics does not have.In quantum informatics,when transmitting information,the capacity and safety of information break up the limitation of classic information transmission because of the characteristics of quantum theory.Due to its unparalleled advantages,quantum informatics makes great breakthrough both in theory and experiment,paving a new way to information transmission and becoming a research hotspot in the field of science.Quantum communication is a branch of quantum informatics,while quantum teleportation is a branch of quantum communication.Quantum teleportation utilizes the principles such as the quantum entanglement,uncertainty and nonclonability to transmit information,it ensures the safety of information transmission,and expands the capacity of information and also save resources.Thus,there are many schemes about quantum teleportation.The research of the scheme of quantum teleportation will use four dimensional quantum entanglement states as quantum transmission channels to transmit particles is as follows:The first chapter is an introduction.It mainly introduces the background and description of quantum informatics,and the research process and value of quantum teleportation.The second chapter is a brief introduction of quantum entanglement and its degree.Much importance is attached to several common entanglement states and its application.Especially,several examples are given to introduce the application of quantum entanglement.The third chapter introduces the uncertainty principle and No-Cloning Theorem and quantum unitary operation that quantum teleportation follows.Also,it explains the idea of quantum qubit and quantum teleportation and uses examples to introduce the scheme of three research fields of quantum teleportation,which includes probability quantum teleportation,controlled quantum teleportation and multi-particle quantum teleportation.Besides,this chapter stresses on the scheme about quantum teleportation made by Zhang Ting and Tu Xiuli,etc.it is a foreshadowing for three schemes of quantum teleportation using four dimensional entanglement states as quantum channels to transmit unknown particles.The fourth chapter proposes three schemes of quantum teleportation using fourdimensional entanglement states as quantum channels to transmit unknown particles.The sender of quantum information is Alice,and the receiver is Bob. Alice and Bob share the four dimensional entanglement quantum channel of a two-particle.Alice and Bob have a particle respectively. Alice is to transmit the quantum state of an unknown particle to Bob,so Alice should measure the unknown particle states and inform Bob of the measure result through the classic channel.When Bob receives the result sent by Alice,it can perform the unitary operation of its particle quantum states and successfully remodel the unknown particle quantum states. According to the research,if Bob’s unitary operation and Alice’s measurement basic is appropriate,the scheme of quantum teleportation can be achieved with the maximum of possibility and finally remodel particle states.The fifth chapter is a conclusion and outlook.With its unique characteristics,quantum teleportation becomes a hotspot in the field of science.The development of quantum teleportation is a choice made by history and a requirement of the times.It is believed that the future of information field belongs to quantum teleportation.