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Two months ago we had a story that 14 qubits was the largest quantum computer yet (http://news.ycombinator.com/item?id=2404470 http://news.ycombinator.com/item?
by foob 15y ago
Two months ago we had a story that 14 qubits was the largest quantum computer yet (http://news.ycombinator.com/item?id=2404470 http://news.ycombinator.com/item?id=2404470). This one now has 128? Is this just a money difference, was this a huge engineering breakthrough, or is there something else going on here?
- mturmon 15y agoThere's something else going on here. The one-line explanation is that true QC requires quantum entanglement to be preserved, for reasonably long time scales, across all qubits. It's not believed that the D-Wave 128-bit machine does this, although the 8-bit one seems to. Here's the opinion of an independent critic: http://blogs.forbes.com/alexknapp/2011/05/24/q-and-a-with-prof-scott-aaronson-on-d-waves-quantum-computer/ http://blogs.forbes.com/alexknapp/2011/05/24/q-and-a-with-pr...