On Fri, Aug 2, 2019 at 1:25 PM 'Brent Meeker' via Everything List <
[email protected]> wrote:

>
>
> On 8/2/2019 10:42 AM, Jason Resch wrote:
>
> Quantum computers work by interference of quits, and such interference can
>>>> only take place in one world -- different worlds are orthogonal. The fact
>>>> that one can analyse a quantum computer in a particular basis which can be
>>>> represented as a series of parallel computations does not mean that this is
>>>> actually what happens. Heuristic constructs seldom correspond to reality.
>>>>
>>>
>>> None of this comes anywhere close to addressing my question.
>>>
>>
>> Well, you have either not understood the question, or my answer to it.
>>
>
> I asked where those 10^1000 intermediate computation states are realized,
> and your reply was a basic description of how quantum computers use qubits
> and interference.  You said this all takes place in one world, but the
> total information content and computational capacity of the observable
> universe about 800 orders of magnitude less than 10^1000.
>
> You then added a sentence that suggested the intermediate computational
> states perhaps don't exist, but then how does the correct answer get into
> the output bits when we read it?
>
> David Deutsch said he has never seen a sensible answer to the question of
> how quantum computers work from the context of any single-universe
> interpretation.  Do you think your answer would satisfy him?
>
>
> All those "intermediate computation states" are so "numerous" because the
> state is being expressed as a superposition of qubit basis states.  From
> another viewpoint the state is just a single ray in Hilbert space that
> happens to not be orthogonal to any of those bases
>

So in your view, are they real?

Jason

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