IBM unveils 127-qubit quantum processor
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IBM unveils 127-qubit quantum processor
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Re: IBM unveils 127-qubit quantum processor
#2surprisingly not a word about quantum supremacy
Re: IBM unveils 127-qubit quantum processor
#3> IBM Quantum System Two is designed to work with IBM's future 433-qubit and 1,121 qubit processors.
what's the smallest useful (as in, 'non-toy', or maybe 'worth buying time on') quantum computer?
Re: IBM unveils 127-qubit quantum processor
#4Any idea where one can find qubit lifetimes and gate fidelities? The classical RF engineering behind controlling that many qubits is certainly great, but it is hard to get excited about the "quantumness" without these figures of merit.
Re: IBM unveils 127-qubit quantum processor
#5Very press-releasey, which I guess is fair given that it is, indeed, a press release. I'd love to hear more context from people knowledgeable in the field.
Re: IBM unveils 127-qubit quantum processor
#6As someone who knows little about quantum computing, what is the significance of 127-qubits? (as opposed to classical computing's 128 bits, as a reference)
Re: IBM unveils 127-qubit quantum processor
#7surprisingly not a word about quantum supremacy
> It heralds the point in hardware development where quantum circuits cannot be reliably simulated exactly on a classical computer.
Re: IBM unveils 127-qubit quantum processor
#8> IBM Quantum System Two is designed to work with IBM's future 433-qubit and 1,121 qubit processors. what's the smallest useful (as in, 'non-toy', or maybe 'worth buying time on') quantum computer?
If you are a researcher from another field that just wants to contract out the computation of a numerical solution to some chemistry problem infeasible on a classical supercomputer, a million "physical" qubits is a fairly reasonable guestimate.
If you are a quantum computation person developing near term applications, you probably would already start getting excited with a 100 (sufficiently long-lived) qubits.
The "sufficiently long-lived" is the problematic part. Every lab has its own bespoke figure of merit (quantum volume, CLOPS, fidelities, etc). It is basically impossible to compare devices without being a researcher in the field for now. But at some point a novel drug or material will be developed thanks to a quantum computer and then we should really get excited about renting time on these devices.
Re: IBM unveils 127-qubit quantum processor
#9As someone who knows little about quantum computing, what is the significance of 127-qubits? (as opposed to classical computing's 128 bits, as a reference)
Thus far, only D-Wave has truly scalable control over their qubits. They accomplished that by moving to an entirely different computational regime. Until gate-model efforts find a solution to scalable control, every "we built a bigger chip" announcement is a milestone in microwave engineering.
Re: IBM unveils 127-qubit quantum processor
#10As someone who knows little about quantum computing, what is the significance of 127-qubits? (as opposed to classical computing's 128 bits, as a reference)
Nothing. It is just how many they were able to manufacture and control reliably. Probably were aiming for some power-of-two number but had a couple of defects.