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Slightly unrelated question but does anyone knows how quantum computing will change if Copenhagen interpretation is invalid and instead De Broglie–Bohm theory p
by 6d6b73 9y ago
Slightly unrelated question but does anyone knows how quantum computing will change if Copenhagen interpretation is invalid and instead De Broglie–Bohm theory proves to be correct?
- PeCaN 9y agoIt wouldn't change at all. Interpretations of quantum mechanics are just that, interpretations. They don't change the results.
- 6d6b73 9y agoYes, but if one interpretation is deterministic and one probabilistic doesn't it mean that the mechanics will change, and what we currently think is how quantum computers could work, will potentially make them faster/slower/impossible?
- Tomminn 9y agoPilot wave just moves the quantum magic/weirdness/conspiracy to a particle whose trajectory we cant see, that "rides" the pilot wave in a manner that grossly violates our notions of cause and effect. Under pilot wave theory, you can still build the same computer, but the explanation for the magic efficiency is explained in terms of the magical movements of the rider particle.
- openasocket 9y agoIt's irrelevant. Interpretations try to create a model that explains why something acts the way it does. Under pilot wave theory, quantum particles act the same way they would under the Copenhagen interpretation.
- __MatrixMan__ 9y agoI was under the impression that those theories agree about their predictions. Their relative merits come down to how well they explain things and how well those explanations jive with existing science. So either: - I'm wrong, and some phenomenon exists that can differentiate the theories. - The only thing about quantum computing that will change if the Copenhagen interpretation falls out of favor is the contents of the textbooks
- 6d6b73 9y agoFrom what I've read (admittedly not enough) Pilot Wave theory is very deterministic and have some other weird quantities for example the observer does not really affect the result of double-slit experiment (if I understand correctly)
- sjcsjc 9y agoThank you for asking this. I've been wondering about it for several years. My assumption has always been that if the latter is correct, then some kind of exponential increase in time to get a solution would be involved. I'd love someone who actually knows something about physics to give an answer that's understandable to people who haven't studied the subject since high school 30 years ago.
- deepnotderp 9y agoNot at all. Interpretations are interpretations, not changes to the mathematical mechanisms.
- 6d6b73 9y agoI have to disagree. EM drive is theoretically impossible with Copenhagen interpretation but with Pilot Wave not only it's possible but we can improve its efficiency. It would make sense that similar situation is possible with quantum computing.
- smaddox 9y agoHow does pilot wave theory make violating conservation of momentum possible?
- 6d6b73 9y agohttps://www.sciencealert.com/physicists-have-a-weird-new-idea-about-how-the-impossible-em-drive-could-produce-thrust https://www.sciencealert.com/physicists-have-a-weird-new-ide...
- kelvich 9y agoQuickly looked at what is written in other articles by these authors, and it's total BS. Sadly that these 'research' made it way to sciencealert.com.
- deepnotderp 9y agoWe have no idea why the EM drive works. It doesn't seem to make any sense as it seems to violate conservation of momentum, but experiments have the ultimate say.
- Tomminn 9y agoPilot wave theory is actually a small change to the mathematical model in QM, but it is one which never affects anything that you can measure in the lab. It is correct to say that all interpretations lead to the same predictions, but not actually correct to say they're the same mathematical model.
- smaddox 9y agoThe Copenhagen interpretation is trivially invalid in the sense that it is incomplete: it doesn't provide a clear definition of what a "measurement" is. The De Broglie-Bohm interpretation doesn't have this problem, because it does not distinguish between quantum interactions and "measurements"; they are one and the same.