From: <[email protected] <mailto:[email protected]>>
On Tuesday, July 31, 2018 at 4:21:53 AM UTC, Bruce wrote:
From: *Jason Resch* <[email protected]>
On Mon, Jul 30, 2018 at 8:33 PM Bruce Kellett
<[email protected]> wrote:
From: *Jason Resch* <[email protected]>
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
*
In a quantum computer it is interference between different (entangled)
qubits.
Bruce
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