On 8/6/2019 6:38 AM, Bruno Marchal wrote:
If the QC does its task effectively, the output basis qbits will be
put into definite states,
Relatively to the observer, but in the global state, the observer will
inherit the superposition state, by linearity of the tensor products
and of the evolution.
In something like Shor's algorithm there is only one final state with
non-vanishing probability. Yet this is the kind of algorithm that
Deutsch cites as proving there must be many worlds.
Brent
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