Quantum Cryptography Technology and Application in Smart Grid

Recently, more and more governments and institutions are paying attention to quantum security communication because of its strict security. In China, some significant progresses have been made in practice when the research goes deeper. This paper investigates some key technologies of quantum cryptography in smart grid of China. First, the applications and challenges of quantum communication in smart grid are depicted, then the key technologies utilized in smart grid based on quantum key distribution (QKD) are explored in tail. At last quantum secure communication, including fault locating, long distance transmission and WDM technology are discussed. Our researches on the application of quantum cryptography in smart grid are very effective and hopeful to be extended to more application fields.