Depends how you measure quantum supremacy. If you measure by seconds of computation, then the claim has been debunked since if you rent the most powerful superc

Depends how you measure quantum supremacy. If you measure by seconds of computation, then the claim has been debunked since if you rent the most powerful supercomputer in the world you can match the performance of the experiment. If you measure by e.g. energy usage then the claim remains, since it would cost orders of magnitude more energy to run the algorithm described in the paper than run Google's experiment.