Google published "Quantum supremacy using a programmable superconducting processor"
Their processor, Sycamore, takes about 200 seconds to operate the task for a state-of-the-art classical supercomputer would take approximately 10,000 years（※）.
This paper is called milestone in quantum computing.
Professor Keisuke Fujii, Deputy Director of QIQB, is one of the referees of this landmark work!!
※IBM says 2.5 days, Alibaba says about 20 days.