China adds a quantum computer to high-performance computing arsenal

China already has the world's fastest supercomputer and has now built a crude quantum computer that could outpace today's PCs and servers.Quantum computers have already been built by companies like IBM and D-Wave, but Chinese researchers have taken a different approach. They are introducing quantum computing using multiple photons, which could provide a superior way to calculate compared to today's computers. The Chinese quantum computing architecture allows for five-photon sampli