On Tuesday, June 20, 2017 at 3:08:42 AM UTC+10, Brent wrote: > > > > On 6/19/2017 2:46 AM, Bruno Marchal wrote: > > So back to quantum computation: what I think that QC demonstrates > (independently of it being realised by network models or cluster > states) is that the superposition of states really does mean that the > various states **exist**. > > > Superposition of states just means you choose a basis for the states that > did not have the right eigenstates. "Being in a superpostion" is just a > coordinate choice. It's like saying that going from Bermuda to London is a > superposition of north-traveling and east-traveling. > > > ? That resembles a confusion between pure state and mixed state. > > > I didn't say anything about mixed states. I pointed out that any pure > state can be expressed as a superposition by writing it in basis other than > its eigenbasis. This is not unique so which states appear in the > superposition is matter of choice. That makes it hard to regard them as > existing. > > I am sure you are aware of the difference so I find this answer very > weird. It brushes away all the interpretation problem we have of the facts > (not just the theory). Single photon (or molecule) interference would not > exist if pure state where not also superposition in the rotated base. > > > Why would you say that if I fly from Bermuda to London it demonstrates > that flights from Bermuda to Algiers and Algiers to London exist? >
No, but if when nobody is watching you fly, you arrive in London with airport souvenirs from Algiers, well... > > Brent > -- 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.
