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Scientists may have found the holy grail of quantum computing (www.sciencedaily.com)

submitted 4 days ago by Gsus4@mander.xyz to c/science@mander.xyz

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Scientists may have spotted a long-sought triplet superconductor — a material that can transmit both electricity and electron spin with zero resistance. That ability could dramatically stabilize quantum computers while slashing their energy use. Early experiments suggest the alloy NbRe behaves unlike any conventional superconductor. If verified, it could become a cornerstone of next-generation quantum and spintronic technology.

essentially a conductor for "spin currents"

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[–] SmoothOperator@lemmy.world 5 points 3 days ago (1 children)

It would be a terrible machine for that. Never use a quantum computer to multiply numbers.

[–] mech@feddit.org 2 points 3 days ago (1 children)

Isn't that kind of a thing it needs to do to find the factorials of large numbers to break traditional encryption?

[–] SmoothOperator@lemmy.world 5 points 3 days ago

Not really. It needs to apply unitary operators to elements in Hilbert space, which is essentially multiplying matrices onto vectors.

Which you could do by multiplying the involved numbers one by one, as most classical methods would, but then you're missing the point of using a quantum computer.