Quantumctek 

QuantumCTek Co., Ltd., together with its subsidiaries, engages in the research, development, production, and sale of quantum communication, computing, and measurement products in China. The company offers quantum-secure communication network core equipment, including MAN and BN QKD, portable ground station for satellite QKD, channel and key network switching, and fixed network encryption application products; and quantum-secure application products, such as quantum security services mobile engine, quantumbuds, quantummail, quantum meeting, quantum identity security system, qukey, qtcard, quantum security intelligent office books, and quantum security HD walkie-talkie. It also provides operating system software comprising Guo-Dun quantum-secure communication network management system and Guo-Dun network operation and maintenance system; quantum computer products, which include ezq-fridge, superconducting quantum computing cable components, Josephson impedance gradient parametric amplifier, ruthenium oxide thermometer, and extremely low temperature and low noise platform; and optoelectronic products, such as detectors, light sources, and random numbers. In addition, the company offers teaching systems and scientific instruments; and quantum precision measurement products comprising single photon imaging, cold atomic gravimeter, and femtosecond laser frequency comb. It serves the government, finance, national grid, and other sectors. The company was founded in 2009 and is headquartered in Hefei, China.