Research Of Architecuture And Protocol Of Quantum Communication Network And Simulation Of Burst Scheduling Algorithm Of Optical Burst Network

At present, security in most of crypto-systems is guaranteed by the computational complexity; but this will never last indefinitely. Advanced computation will eventually break crypto-systems. However, the security of quantum key distribution (QKD) is permanently guaranteed through a combination of information theory and the laws of physics. The implementation of QKD relies on the generation, transmission and detection of single photon. Ideal single photon source is still on the research stage. The unconditional security has been proven even with weak laser pulses by using a decoy method, which accelerated the development of QKD.Practical deployment of QKD systems is currently limited by few technical challenges. First, the coexistence of both quantum information and classical information transmission on the same fiber. Besides, QKD links can only operate over point-to-point connections, and the current QKD links have limited generation rate and cannot be deployed over arbitrarily long distance. Thus, the development of QKD network architectures and the key distribution in the integration of QKD network and optical network is the necessary step toward the effective deployment of QKD.In this paper, we are going to study the technology of node and link in SECOQC QKD network, also the protocol stack; compare the architecture of SECOQC QKD network and TOKYO QKD network; analyze the key distribution between data plane and quantum key distribution plane in the integration network of optical network and quantum key distribution network, propose a new key management based on the length of path and using frequency. Besides study the burst channel scheduling algorithms of core node in optical burst network; with the OPNet software, investigate the affect of the length and number of the optical buffer lines on the burst loss ratio.