On Tuesday, July 31, 2018 at 4:21:53 AM UTC, Bruce wrote: > > From: Jason Resch <[email protected] <javascript:>> > > On Mon, Jul 30, 2018 at 8:33 PM Bruce Kellett <[email protected] > <javascript:>> wrote: > >> From: Jason Resch <[email protected] <javascript:>> >> >> >> You can use "itself" only if this "it" can be in multiple locations and >> heading in different directions. >> >> >> That is a property of waves. But you will only ever observe a single >> photon from this wave..... >> > > Waves/Photons, doesn't matter what you call them. > > Within the quantum computer this wave/photon is simultaneously in many > different locations/doing many different things, performing computations > and doing useful work using all of its separate superposed instances of > itself. Once it's done doing all this work it settles down on a final > value which we can read. And it will be correct, and may have finished an > enormous computation in a short period of time, if and only if, it did in > fact split up and do all these independent things simultaneously. > > > Or you can view the action of a quantum computer as a simple interference > effect. Incorrect solutions to the algorithm destructively interfere. You > don't have to introduce ideas such as 'being in different locations and > doing different things.' It is just simple interference in a wave. (And it > is all in one world, because interference can only occur within the one > world.) > > *But the qubit is a two state system, presumably of orthogonal eigenstates, which don't interfere with each other. How can you assert that interference exists in this situation? AG *
> > > On that we agree. But where did those other photons come from? How did >> they get to be in different positions going in different directions? >> >> >> They aren't. >> > > How do do you explain the experiment with beam splitters and recombining > light at a half silvered mirror to interfere and only be reflected one way? > > > Photons have both wave-like and particle-like properties. That is quantum > physics. > > So do you accept or reject that this "wave" can be in different places > simultaneously? > > > A wave is not a localized object, so the same wave can extend to different > locations. > > Bruce > -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
