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As that article notes, IBM (which obviously has a dog in this fight) has strongly disputed Google's claims. I don't have enough expertise to judge.
by howlgarnish 6y ago
As that article notes, IBM (which obviously has a dog in this fight) has strongly disputed Google's claims. I don't have enough expertise to judge.
- himinlomax 6y agoIirc IBM came up with an optimization of the classical algorithm (specifically using enormous but still (barely) practical amounts of RAM) that reduced the advantage of Google's quantum algorithm by an order of magnitude or two. There was two issues with their argument though. First, they hadn't implemented it yet, which is rather ironic considering that Google's feat was in actually delivering an implementation. Second, Google's quantum computer is still orders of magnitude faster than IBM's optimized classical approach, not to mention cheaper.
- tsimionescu 6y agoNeither do I, but Scott Aaronson surely does, and he believes Google have unequivocally proved quantum supremacy. According to him, IBM has disputed the extent of the advantage proven by Google, but not the actual fact that they succeeded.