Design and realization of Quantum communication instant messaging system based on SIP protocol

Quantum communication is a new interdiscipline developed in recent twenty years, it is a new area of research that combines both quantum theory and information theory. Compared with the traditional means of communication, quantum communication has the absolute security features. The paper gives the design scheme of quantum communication network instant Messaging system based on SIP protocol, including SIP server process flow of information, user login and transmission of information between users.