[trhway]

>Quantum mechanics is about a 100 years old, and no violation has even been observed in laboratory, particle accelerators or outer space. The quantum theory is the most accurate theory we ever had in the history, tested to less than 1 in a billion precision.

sorry, i think you're doing a slew of hands here. Quantum computing relies not just on QM, it relies on Copenhagen interpretation of it - superposition being a physical reality, not just statistical description. That interpretation is tested by the Bell experiments and granted where have been a bunch of them which do look like confirming the Copenhagen.

>Even classical computers rely on it.

all that confirms QM, not the Copenhagen interpretation. Wrt. Google supremacy demonstration - it would work the same in statistical aggregate interpretation too thus actually not showing anything quantum computing.

[tagrun]

No. An interpretation is just that. No matter what interpretation you use, the experimental measurement results are the same.

If they don't give the same results, it won't be interpretations: you'd have two competing theories and one of them will be wrong since it can be ruled out experimentally.

This is also why majority of physicists don't care much about such philosophical aspects. You can argue that they should, are there are a few people working on foundations of quantum mechanics, but most physicists (including me) see it as semantics and choose to spend their time on practical physics. At least that's what my field (condensed matter physics) is about, which also encompasses the realization of these quantum computers. You can't change the conductivity of a material, or the measured charge state of a transmon qubit by using a different interpretation.

[trhway]

>No matter what interpretation you use, the experimental measurement results are the same

Sorry, no. Bell experiments do produce different measurements for different interpretations thus ruling one of them true. As it stands now they seems to confirm Copenhagen for pretty much everyone.

[tagrun]

Then I don't know which crackpot "interpretation" (that doesn't even agree with the experiments, unlike MWI etc) you are referring to, but you can rest assured that nothing in these experiments or condensed matter physics in general depend on it.

[trhway]

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.675...

https://www.informationphilosopher.com/solutions/scientists/...

"Ensemble interpretations of quantum theory contend that the wave function describes an ensemble of identically prepared systems. They are thus in contrast to “orthodox” or “Copenhagen” interpretations, in which the wave function provides as complete a description as is possible of an individual system."

Bell experiments seems to almost everyone to rule it out, while myself unfortunately, as i really want to wholeheartedly jump on magical bandwagon of superposition and quantum computing, see gigantic holes in those experiments which allow all those other, compatible among themselves interpretations - local realism, pilot wave and ensemble - in and actually pretty much rule Copenhagen out.