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https://warpcast.com/~/channel/quantum
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Quip Network π
@quipnetwork.eth
Another great question we get frequently: are commercially useful quantum computers really only a few years away? We really think so! But the future is hard to predict, so let us give you a little more background to show you what's up and let you decide for yourself π§΅π
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Quip Network π
@quipnetwork.eth
Last year, Sundar Pichai, Satya Nadella, Arvind Krishna, & others were saying 10-20 years out; this year they all say 3-5 years So what happened? We made a lot of progress on logical qubits & our chip manufacturing game for CPUs & GPUs translates to QPUs https://x.com/quipnetwork/status/1906765987518792060
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Quip Network π
@quipnetwork.eth
So those are two big claims. What exactly is a logical qubit? In quantum computing, we separate out physical & logical qubits Physical qubits are prone to error because we can only observe an end outcome & we're unsure if we perfectly controlled the qubits to behave as expected
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Quip Network π
@quipnetwork.eth
But if we put enough qubits together we can use the outcome of nearby qubits to check our math If the error rate is low enough, we call this group of physical qubits a logical qubit, since the group together performs logic Check out logic timelines: https://thequantuminsider.com/2025/03/29/rise-of-the-logical-qubit/
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Quip Network π
@quipnetwork.eth
Now, once you have a reliable logical qubit, like Microsoft's Majorana "tetron" pictured below, you can tile them across a substrate using known 3-5nm chip manufacturing techniques. That means your 1st logical qubit is pretty close in time to your 1st 1000 logical qubits
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Quip Network π
@quipnetwork.eth
Don't believe us? Try reading this paper from Quera Computing that makes a compelling case for all the scaling factors working together to make a near-term platform possible. This paper is from almost 2 years ago! https://www.nature.com/articles/s41586-023-06927-3
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Quip Network π
@quipnetwork.eth
We're just now starting to see some useful applications on today's quantum computing platforms like DWave Quantum's recent fluid dynamics demo or Quantinuum QC's demo of true quantum randomness https://www.quantinuum.com/blog/quantinuum-introduces-first-commercial-application-for-quantum-computers
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Quip Network π
@quipnetwork.eth
Now, this limits you to the logical qubits you can fit on one chip, but there's also been progress on quantum teleportation, which entangles one quantum network with another separate net to share state We might soon connect chips together https://www.nature.com/articles/s41586-024-08404-x?linkId=12807895
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