No: so far there is some (but highly contested) evidence of a quantum effect, but no evidence of quantum speedup. And in general, there are very good reasons for betting ex ante that their particular approach (quantum adiabatic) is way off the mark and will never pan out.
Like other commenters wrote earlier [1,2], Aaronson has done an excellent job over the years of calling them out on their bullshit; so check out his blog and media appearances. Also, for some reason, the signal-to-noise ratio in this topic is unusually low even among 'expert opinion' (as you can tell from that BBC article), so keep that in mind.
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No: so far there is some (but highly contested) evidence of a quantum effect, but no evidence of quantum speedup. And in general, there are very good reasons for betting ex ante that their particular approach (quantum adiabatic) is way off the mark and will never pan out.
Like other commenters wrote earlier [1,2], Aaronson has done an excellent job over the years of calling them out on their bullshit; so check out his blog and media appearances. Also, for some reason, the signal-to-noise ratio in this topic is unusually low even among 'expert opinion' (as you can tell from that BBC article), so keep that in mind.
[1] https://news.ycombinator.com/item?id=7771697
[2] https://news.ycombinator.com/item?id=7771684