this post was submitted on 10 Dec 2024
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[–] [email protected] 11 points 11 hours ago

Maybe they can use the same techniques for keeping their product management and feature roadmap for more than an hour.

[–] [email protected] 49 points 1 day ago (3 children)

About how far does this leave us from a usable quantum processor? How far from all current cryptographic algorithms being junk?

[–] jewbacca117 11 points 20 hours ago

At least a week, probably more

[–] [email protected] 70 points 1 day ago (1 children)

The latest versions of TLS already have support post-quantum crypto, so no, it's not all of them. For the ones that are vulnerable, we're way, way far off from that. It may not even be possible to have enough qbits to break those at all.

Things like simulating medicines, folding proteins, and logistics are much closer, very useful, and more likely to be practical in the medium term.

[–] [email protected] 15 points 1 day ago (1 children)

Is there gov money in folding proteins though? I assume there’s a lot of 3 letter agencies what want decryption with a lot more funding.

[–] [email protected] 23 points 1 day ago (2 children)

There's plenty of publicly funded research for that, yes.

Three letter agencies also want to protect their own nation's secrets. They have as much interest in breaking it as they do protecting against it.

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[–] [email protected] 10 points 1 day ago

Seeing quantum computers work will be like seeing mathemagics at work, doing it all behind the scenes. Physically (for the small ones) it looks the same, but abstractly it can perform all kinds of deep mathematics.

[–] [email protected] 10 points 1 day ago (1 children)

108 qubits, but error correction duty for some of them?

What size RSA key can it factor "instantly"?

[–] [email protected] 7 points 20 hours ago* (last edited 20 hours ago) (1 children)

Currently none, I think it's allegedly 2000 qbits to break RSA

[–] [email protected] 1 points 11 hours ago

afaik, without a need for error correction a quantum computer with 256 bits could break an old 256 bit RSA key. RSA keys are made by taking 2 (x-1 bit) primes and multiplying them together. It is relatively simple algorithms to factor numbers that size on both classsical and quantum computers, However, the larger the number/bits, the more billions of billions of years it takes a classical computer to factor it. The limit for a quantum computer is how many "practical qubits" it has. OP's article did not answer this, and so far no quantum computer has been able to solve factoring a number any faster than your phone can in under a half second.

[–] [email protected] 13 points 1 day ago

Just in time for the fall of American democracy. What could possibly go wrong.

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