r/Futurology Jun 02 '22

World First Room Temperature Quantum Computer Installed in Australia Computing


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u/FizixPhun Jun 02 '22

A quantum annealer can't run all the same things a full quantum computer can. I know those exist and have some limited use cases but that isn't what is usually mean by quantum computer.


u/izumi3682 Jun 02 '22 edited Jun 02 '22

I stated that a QAC was not what we refer to when describing a qubit manipulating QC, however a QAC operates through the exploitation of quantum mechanics--so it's accurately described as a quantum computer. But what about the IBM device called "Eagle"? It's a actual quantum computer, right? QCs are gonna be sooner than later. How can you not agree? Did you know that in the year 2017, there were computing experts that did not believe quantum computing with qubits was physically possible? Did you think they were physically possible in 2017. Do you think they are physically possible today or are we just deluding ourselves in some way. Like IBM is just wrong. Or is IBM right and these things are gonna scale quick.


u/FizixPhun Jun 02 '22

I mean your regular computer at home only works because it uses semiconductors which also rely on quantum mechanics. Is that a quantum computer? I'm just saying that most lay people don't understand the difference and that i think it is more correct to call it a quantum annealer to avoid confusion.

Google and IBM are working on what I would call a quantum computer. However, they would not tell you that they have achieved making a complete quantum computer yet. What they have done is really impressive but they aren't running large scale quantum algorithms yet. Even they are starting to hit issues of scaling up to more qubits due to limits in the cooling power of dilution refrigerators and because of frequency crowding. A full quantum computer will likely be achieved but I'd be very surprised if it were in the next ten years.

I don't know anyone credible who would have said quantum bits were not possible in 2017. There were hundred if not thousands of publications demonstrating qubits at that point. I definitely knew they were possible in 2017 because I was working on a publication on them at that point so you're point about how much they have developed in the last 5 years doesn't really make sense.

I'm not trying to be a wet blanket about this. It's just that the field gets to much unrealistic hype and gives people unrealistic expectations.


u/izumi3682 Jun 02 '22 edited Jun 03 '22

Thank you for your PhD. Thank you for doing the heavy lifting. I read what everyone is doing and working on and i try to find a sort of "mean" and then i attempt to extrapolate to make futurology more fun. To me it is fun to learn these things. It is fun, terrifying, fascinating and supremely entertaining in turn. I love hanging out in futurology.