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Quantum CEO explains how his startup intends to scale from 5 qubits to 5 million qubits.

34,915 Aufrufe • vor 2 Jahren •via X (Twitter)

9 Kommentare

Profilbild von Chao-Yang Lu
Chao-Yang Luvor 2 Jahren

Some start-up not having a good single-photon source claimed it is the only doable way to a million-photon practical quantum computer by 2020 (soon changed to 2025 and then 2027)

Profilbild von Nigam Arora
Nigam Aroravor 1 Jahr

Money is to be made in quantum computing, but carefully. Know-nothing pumpers have pushed quantum stocks into fantasy land. I am a nuclear physicist and market veteran. Do not become a bag holder — get the truth from a nuclear physicist.

Profilbild von Lautaro Vergara 🇺🇦
Lautaro Vergara 🇺🇦vor 2 Jahren

😂

Profilbild von Patrik Spurzem
Patrik Spurzemvor 2 Jahren

😅

Profilbild von Wendy🌸
Wendy🌸vor 2 Jahren

😂😂😂😂😂😂😂

Profilbild von Apuntes de ciencia
Apuntes de cienciavor 2 Jahren

@skdh Almost twelve inches. Almost 🤭

Profilbild von ItsBS
ItsBSvor 2 Jahren

You know Alibaba and Baidu recognized the pseudoscience of Quantum Mechanical Computers. Maybe the Dulwich startup has the right formula to make it all work. 🤷‍♂️ Never give up!

Profilbild von Eric Copenhaver
Eric Copenhavervor 2 Jahren

"My manager explained it to me"

Profilbild von narcissist chronicles
narcissist chroniclesvor 2 Jahren

It would be a bit of a stretch, but this also works for 'current carbon capture technology and infrastructure' vs 'carbon capture required to reverse the GHG warming'

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The Google and Caltech quantum papers demonstrated 2 breakthroughs: that Bitcoin cryptography is much easier to break than previously thought, and that far fewer logical qubits may be necessary for physical qubits. Project Eleven CEO Alex Pruden explains: "These two papers are not necessarily about a quantum computer that's bigger or more capable. They're about what it takes to break cryptography." "So what changed? One of the things that changed was that physicists and quantum cryptographers that looked at this problem for a long time studied an algorithm called RSA — an older cryptographic algorithm." "But that's not what really any blockchains use, because RSA keys are very large. It turns out, and this was one of the key upshots of the Google paper, that if you focus on the cryptography used by Bitcoin, Ethereum, and other networks, it's actually way easier to break than they thought it was, compared to RSA." "The other big breakthrough, and this is from the Caltech paper: Quantum computers are very fragile, generally. So to be useful, they need to have what's called error correction applied. And that can result in a lot of overhead. You need to have tons of physical qubits to get to one logical qubit." "This Caltech paper basically showed, 'Hey, we have some new ideas for error correction. And it turns out if we apply those, we don't need hundreds or thousands of physical qubits, maybe we just need a handful to make one logical cubit.'" "The headline of their paper is 'You may only need 10,000 physical qubits to run Shor's algorithm.' And by the way, they demonstrated 6,000 last year."

TBPN

16,456 Aufrufe • vor 5 Monaten