All “industrial” quantum computers currently fall entirely in the former category. Anyone trying to tell you otherwise is selling snake oil.

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ion_trapper 6 hours ago | parent [-]

Is there a QC out there that can perform a commercially useful computation? No, not yet. And yes snake oil is abound. But the reality is not two categories, it's a spectrum. Some are more useless than others.

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cwillu 6 hours ago | parent | next [-]

No, it's not a spectrum in any meaningful sense. There are scam companies (some with semi-respectable research departments attached to them) and there are research projects. Anyone selling devices with the promise that those devices will do anything useful for their customers are simply lying.

It's like fusion energy: there are legitimate companies working on the problem, and they may even succeed at some point, but anyone willing to deliver a 1MW fusion plant tomorrow is scamming you, because the technology doesn't work yet.

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ottah 4 hours ago | parent [-]

I have far more faith that fusion someday might be useful than I do for quantum computing.

	▲	trick-or-treat 3 hours ago \| parent [-]
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monero-xmr 4 hours ago | parent | prev [-]

The first QC that decrypts previously undecipherable text will have incalculable value to the government that surrounds it. QC companies are bullshit because they will take whatever free non-gov money they can, why not? They exist to absorb government money, rightly so, but their public profile is simply to get money from private sector sources