Scientists just found a way to tell if quantum computers are wrong

Swinburne University researchers developed new methods to verify the accuracy of quantum computers, addressing a critical challenge in quantum computing development. Their techniques can determine in minutes whether Gaussian Boson Sampler quantum devices are producing correct results, using only a laptop computer. When testing a published experiment that would take 9,000 years for supercomputers to reproduce, they discovered previously undetected errors and noise, demonstrating how their validation methods could help develop reliable commercial quantum machines.