QUANTUM CIPHER COMMUNICATION SYSTEM

摘要

A quantum cipher communication system for quantum cipher communication in an optical network. The system comprises a transmitter for transmitting a packet signal having at least an light pulse train representing an address and a single photon pulse train used for quantum cipher, and a router including a header analyzer for extracting the address information in the light pulse train from the packet signal and a gate switch for selecting one of optical fibers. The router routes the packet signal by selecting an optical fiber used for the next transmission path according to the extracted address information by the header analyzer and by switching the path to the selected optical fiber by the gate switch.