The new Chinese quantum computer is a million times more powerful than possibly the fastest in the world . [Google] ’s machine. It is Competition between Washington and Beijing in the field of quantum technologies is growing. Physicists in China claim to have built a quantum computer that is faster and more efficient than its American counterpart from Google. The development article is published in the peer-reviewed journals Physical Review Letters and Science Bulletin. A supercomputer called Jiuzhang 2 can solve in one millisecond a problem that would take the fastest conventional machine 30 trillion years to complete. Scientists also...