Quantum computers are in use now.
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don't improve upon classical computing equipment:D-Wave Systems
One should not be misled by the word "commercial". It means that you can buy it if you want, but it doesn't mean that it is used for practical purposes such as business, banking, security, intelligence or military. It's only use at the moment is for academic studies of quantum computers as such.commercially available quantum computer"
Sort of? The amount of cheating by making optimizations based on knowing the answer already has decreased over time, so a "15" today means something different than a "15" ten years ago.Is 15 still the biggest number that has been factorized by a quantum computer?
I've heard that factoring numbers is a difficult error-sensitive task for a quantum computer, compared to other problems they're expected to be good at. So I expect we'll be simulating chemistry, or whatever, way before we're factoring 10-digit numbers.as far as I can tell, the new work is a genuine milestone in experimental QC, because it dispenses with most of the precompilation tricks that previous demonstrations of Shor’s algorithm used.