On 8/8/2019 2:18 PM, Jason Resch wrote:
On Thu, Aug 8, 2019 at 4:15 PM 'Brent Meeker' via Everything List
<[email protected]
<mailto:[email protected]>> wrote:
On 8/8/2019 12:16 PM, Jason Resch wrote:
On Thu, Aug 8, 2019 at 2:11 PM 'Brent Meeker' via Everything List
<[email protected]
<mailto:[email protected]>> wrote:
On 8/8/2019 6:27 AM, Bruno Marchal wrote:
>
> Let us use “superposition of state” instead. The word
“world” has too
> much metaphysical implicit connotations.
> In that case, if the computer run a superposition similar
to the
> initial calculation in Shor algorithm (before taking the
final Fourier
> transform on all superposed results), decoherence means
that all
> computations are done on the superposed state. That is the
massive
> parallelism, than we can exploit through the final Fourier
Transform
> and measurement.
It's "massive parallelism" only in that the state vector's
evolution
simultaneously has components along many different basis
vectors. It's
like saying a trajectory is massively parallel because it
simultaneously
has components in three dimensions.
3 is not very big. What about 10^1000?
It's just a bigger, but still finite, vector space.
What happens when a qubit in superposition of 10^1000 states
A qubit only has two-dimensions in it's Hilbert space.
Brent
interacts with a photon, and that photon hits an atom in a measurement
device, and then another photon interacts with the measurement device
and then an atom in a cell of the retina of the physicists right eye?
Does QM predict that the atom in the physicists retina will also be
described by a bigger vector space?
Jason
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