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No, there are a few well understood approaches to physically creating a QC, each of which are seeing incremental progress every year. That's not to say there's
by daxfohl 5y ago
No, there are a few well understood approaches to physically creating a QC, each of which are seeing incremental progress every year. That's not to say there's a clear path from here to there, but it's a lot closer to clear than fusion. Fusion is still (to my understanding) closer to a research topic without a clear cut approach.
That's also not to say that these roles will not reverse in the future. Perhaps some fundamental problem is found with the existing QC approaches, and someone discovers a fusion approach that is straightforward and just requires a big engineering effort. But right now to me it seems like fusion is closer to a Majorana-based QC (though Majorana is slightly more nebulous since even the theory isn't completely there) than it is to QC in general.