Japan's Northeastern University Institute of Electrical and Telecommunications and University College research team jointly developed the world's highest level of secrecy (signal strength) high-speed high-capacity optical communication system. For the first time, this system combines Quantum Noise Security and Quantum Key Distribution to successfully achieve quantum confidential transmission of 100 km at a speed close to twice the speed of the previous 100GT, the world's fastest single-channel single-channel, and is expected to resist network attacks Extremely secure communication. The results were published on September 18 at the European Conference on the Maximum Optical Communications (ECOC) in Germany. The so-called QAM-type data in which the phase and amplitude of the optical signal are simultaneously multivalued is implicitly used in QAM-type ANSC systems that are encrypted in quantum noise. On the other hand, Japan has developed a four-valued QKD scheme that securely transmits the key for generating and decrypting by weak laser light close to a single photon. To reconcile these two approaches, experts have created a secure, high-speed, high-volume, covert optical communication system that updates the public-key every second. The use of commercially available optical communications elements, and existing optical communications systems integration between the high. The QNSC is a way for public keys to be shared between the sender and the receiver in advance. The key is initially shared and is stolen. Here, in the QAM-type QNSC, the QKD method is limited to the public key transmission, which makes it difficult to steal and enhances the security. In the experiment, the maximum value of 128 QAM signals were transmitted. The use of existing wavelength division multiplexing technology for expansion, then the field of encryption technology is also possible. In addition, a number of QKD devices, multi-relay quantum key words, the transmission distance is also expected to extend to hundreds of kilometers.