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> Except there’s a lot of people (myself included) who don’t consider a quantum annealer to be a quantum computer. Well, great; that's an opinion. The thing is
by mikewave 5y ago
> Except there’s a lot of people (myself included) who don’t consider a quantum annealer to be a quantum computer.
Well, great; that's an opinion. The thing is, if a device uses the quantum-mechanical properties of the universe to do calculation, then it is a quantum computer; asserting that it isn't one is a matter of semantics and categorization, since what you're really doing is redefining the term "quantum computer" to inherently include "gate model" as part of it, which is not a foregone conclusion yet.
I believe, from what I've read, that at this point current and projected gate-model quantum computers will not be competitive on optimization problems where quantum annealing will be, so there is definitely utility in continuing to pursue this research and development exercise.
> There has been also very little if any actual research in other fields powered with quantum computing.
Here's our latest:
https://science.sciencemag.org/content/early/2021/07/14/science.abe2824?rss=1 https://science.sciencemag.org/content/early/2021/07/14/scie...
As a physics playground, annealers are very compelling, and materials research will definitely benefit from these devices.
- xondono 5y ago> The thing is, if a device uses the quantum-mechanical properties of the universe to do calculation, then it is a quantum computer; Except this definition includes classical computers as well. At the scales of current transistors, quantum effects are required to explain their inner workings, and they are used to perform computations.
- dekhn 5y agothis is misleading. we use quantum to explain transistors, but classical computers don't exploit any quantum phenomenon such as coherence, tunnelling, or entanglement.