This is not really correct, as explained in a new video: Debunking Veritasium: The “All Possible Paths” Myth & What Feynman Really Showed
Curt Jaimungal rigorously debunks the viral myth popularized by Veritasium (that quantum particles literally take “all possible paths” has been proved) and clarifies the true mathematical purpose of Feynman's formalism. Learn why this concept is a computational tool in configuration space rather than a physical map of reality.People doing quantum computing are always talking about an electron being in two places at once, like the Schroedinger Cat that is alive and dead at the same time. The many-worlds fans especially like to talk this way. It these things do not happen in standard textbook quantum mechanics.
In textbook/Copenhagen QM, does not have a defined position until it is measured. It does not get observed in two places.
Update: A reader points out that the video is almost a year old.
That is not a new video, it is nearly a year old
ReplyDeleteQuantum Computing is such a put on, and not even an ORIGINAL one at that! Hypothetical devices called "oracles" were used to "realize" a speedup on different computational problems under consideration for conjectural purposes. That is "what if i could get around this problem, could i do this..." They were created as a purely theoretical device by Alan Turing. "Quantum Computing" is basically the same thing, but adding the absurd claim that it's actually realizable if only enough grant money is doled out!
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