China’s top quantum research group said its Jiuzhang quantum computer produced results in minutes that would take 2+ billion years by the world’s No. 3 powerful supercomputer. That exceeds Google’s prototype quantum computer which, last year, came up with a result in minutes that it estimated would take a supercomputer 10,000 years. The two quantum computers work differently: China’s University of Science and Technology’s computer manipulates photons, whereas Google’s builds quantum circuits via super-cold superconducting metal. Continue reading Chinese Researchers Create Quantum Computing Benchmark

In a paper briefly posted to the NASA website, Google stated that it conducted an experimental demonstration that proved the supremacy of a quantum computer, dubbed Sycamore, over a traditional one. Although the quantum computer is “unproven,” it offers the possibility of solving “formerly ungraspable mathematical problems.” A Google source hinted that NASA published the paper before it could be vetted via scientific peer review. Since the article was pulled off the site, Google has not acknowledged its existence. Continue reading Google Claims Quantum Supremacy in Briefly Posted Paper