Research and experiment of open quantum cryptography communication system architecture and co-fiber transmission technology

Abstract

Based on the study of the mechanism of quantum encryption system,the system architecture of open quantum cryptographic communication was proposed.In order to better integrate with the existing communication system,a quantum key distribution (QKD) system and a large capacity optical communication co-fiber transmission scheme were proposed,and the QKD system and 80×100 Gbit/s DWDM were verified through experiments.The feasibility of the system common fiber transmission was realized under the condition of ultra 100 km common fiber transmission,the QKD bit rate ＆gt;1.0 kbit/s and 8 Tbit/s DWDM system without error bit and the practical threshold of the commercial encryption device key rate＆gt;1.0 kbit/s was achieved.

Keywords

• quantum secure communication;co-fiber transmission;wavelength division multiplexing