In 2004, CAS Key Lab of Quantum Information led by academician Guo Guangcan and Prof. Han Zhengfu invented a new type of optical interference ring, which provided a fundamental solution to the problem of stability of the optical fiber transmission, and effectively promoted the practical application of quantum cryptography. At present the technology has been widely used in major companies worldwide working on quantum cryptography. In the year 2007, Prof. Guo and his group invented full cross quantum router to solve the automatic addressing problem of quantum signals in the network. It also achieved four- user metro quantum communication network within a 40 kilometer radius in Beijing commercial fiber, and realized the world's first non- repeater and arbitrarily interconnected quantum key distribution network as well as decoy-state quantum key distribution experiment carried out in underground fibers . In the year 2009, the world’s first real government affair net was constructed in Wuhu, city of Anhui province, which realized the practical application of quantum key distribution. This net connects eight users including Municipal authorities such as Science and Technology Bureau, Merchants Bureau, Economic and Trade Bureau, Federation of Trade Unions, Bureau of Quality Supervision and Wuhu Telecom building. In that way, it forms a multi-functional quantum key distribution network to keep a strictly confidential process of communication between any two points.
Quantum information industry will become the following new generation of electronic information industry. The technology and equipment owned by Anhui Asky Quantum Technology Co., Ltd are already in the leading position worldwide, which will vigorously promote the industrialization process of quantum information.