Field application and security management of a telephone network and a high speed data transmission system with practical ber quantum cryptography

To show how the introduction of quantum communication technology to traditional communication system can meet the demand of field application and security management, we explained in detail the design of a fiber quantum communication system, taking a telephone network and a high speed data transmission system as an example, both were encrypted with quantum cipher and were built on field fiber recently. The procedure of implement and long term operation result of this system were also briefly introduced. It has been veri ed that this system possessed good reliability and usability, while meeting the functional demand for various types of communication and high level security of critical events. We also made some proposals for introducing quantum communication system to public management.