Security Based on Quantum Information Technology and Data Protection of Quantum Information

摘要

Quantum information processing is expected to have unique security applications such as communication security and copy protection based on physical principles in addition to high-speed computation. For the practical use of quantum information processing, fault-tolerant processing is essential to protect quantum information from noise, and fault-tolerant processing for quantum communication based on quantum repeaters is the key for networking. We introduce our efforts in this area in this article.