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so this means the quantum computing is not possible ?

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For quantum computing to be impossible, basically all of quantum mechanics would have to be wrong.

There are enormous engineering challenges with quantum computing, but no fundamental challenges.

There are some who argue those engineering challenges make theoretical compliance moot:

https://spectrum.ieee.org/computing/hardware/the-case-agains...

(I've also just submitted that link to HN separately fwiw)

So the argument is that the chance of having an error goes up exponentially as you add more qubits, 1:1 with the size of the problem state?

Well that's easy enough to understand, even though I have absolutely no idea if it's true or not.

If the error necessarily goes up exponentially, and error correction or dampening can not possibly work, I would count that as new knowledge about the basics of quantum mechanics.

Basically, either quantum computing works or we'll learn a lot more about quantum mechanics we didn't already know.

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