Research On Quantum Communication Protocol In Quantum Communication

Quantum information science is quantum mechanics and information science linking new discipline. In quantum information inside quantum communication is a very important research focus, with the characteristics of quantum mechanics to reach higher security information processing with classical communication transmission is not comparable. The quantum communication laws of quantum mechanics into the traditional communications, Its security guaranteed by the basic principles of quantum mechanics, as an unknown quantum state can not be cloned, non-orthogonal quantum states can not distinguish between quantum states can not be measured without disturbing the system status, You can achieve absolute security of communications.Quantum communication to pass information in accordance with the classical information with quantum information becomes categories. Classic quantum communication to pass information there are two main forms:Quantum Key Distribution, quantum secure direct communication. Quantum communication messages passed quantum teleportation is mainly, It is one of the most visible quantum communication high-profile targets.In quantum communications, quantum channel as a transmission channel is very important, So how to choose the quantum channel is the focus of our research. In order to ensure strict quantum communications, computing effectiveness with correctness, what is the creation of a quantum channel in the quantum information to study the most important issue. Therefore, this article summarizes the general tensor selected quantum channel representation.In this paper, a bidirectional quantum teleportation is proposed, which is based on quantum entanglement. By utilizing this bidirectional teleportation protocol, a bidirectional quantum secure direct communication scheme is presented. In this agreement, Alice and Bob can simultaneously read both the information from both, which both sides have encoding. And it is not required to transmit the quantum qubit of the secret information in the quantum channel. And security analyses of the bidirectional quantum secure communication, to ensure the information security of quantum communication. Quantum channel is an important and indispensable part in the process of quantum communication, Therefore, this paper also summarizes the necessary conditions for selecting a quantum channel to meet the needs, In this paper, we choose the method of tensor representation, which is more intuitive and clear than before.