Chinese scientists have announced their development of the most powerful quantum computer in the world. It works 100 trillion times faster than the fastest supercomputers out there and comes little more than a year after Google unveiled Sycamore, their own quantum computer. President Xi Jinping has said research and development in quantum science is an urgent matter of national concern. And the country has invested heavily in this technology, spending billions in recent years. It has become a world leader in the field.