Research On Efficient Quantum Secure Communication Protocol

As a relatively new discipline, quantum information science is the inter-discipline and combination of quantum mechanics and classical information science. In quantum information science, quantum particles are used as information carrier, so they have the unique nature characters compare with classical information science. The most significant of above these characters is the unconditional security. Because of unconditional security which quantum information science holds, it has been widely focused by attention foreign researchers, and gets the increasing development. In this paper we discuss several issues the as follows:given a common quantum key distribution protocol by a new design of the quantum circuit model; in traditional quantum secure communications, by multiple applications with carrier particles, make them carry more information; by taking the real communication environment into consideration, we design a efficient anti-noise quantum secure communication which can counter the channel noises.In quantum communication, the efficiency of communication determines the applicability of quantum communication schemes directly. For communication carriers, the manner of how to develop them for carrying one or more additional information, is a very worthy of study. In this paper, we use mathematical calculations and derivations and finally design a quantum communication scheme which the communication carriers can transport information twice. As to the communication efficiency, the efficiency of the new scheme is as twice as the traditional communication scheme.In the actual communication environment, channel noise is inevitable. The noise factors will interfere and change the original quantum state, to cause the error rate, which seriously affects the process of normal quantum communication, so the study of quantum communication needs to consider the impact of noise caused. In this paper, we base on the foundation of efficient communication scheme, choose the new information carriers which are able to resist the channel noise, and make sure the high efficiency of original communication scheme.