(Disclaimer: I am not a physicist) Probably they would just explain it with the normal Copenhagen interpretation? https://en.wikipedia.org/wiki/Copenhagen_int

(Disclaimer: I am not a physicist) Probably they would just explain it with the normal Copenhagen interpretation? https://en.wikipedia.org/wiki/Copenhagen_interpretation https://en.wikipedia.org/wiki/Copenhagen_interpretation In terms of quantum theory, the behaviour of a quantum computer is not fundamentally any different to the behaviour of any small scale particle or collection of particles. Even buckyballs have been shown to self-interfere in a double-slit experiment, and that doesn't _prove_ multi-worlds over the Copenhagen interpretation. https://web.archive.org/web/20120331115055/http://www.quantum.at/research/molecule-interferometry-foundations/wave-particle-duality-of-c60.html https://web.archive.org/web/20120331115055/http://www.quantu... There might be other philosophical reasons to believe in many-worlds, and I am partial to it myself, but experimental observation of this form would not to my understanding contribute to that argument.