On 4/26/2018 5:31 PM, smitra wrote:
you can use qubits to represent spins and let some AI generated by a quantum computer measure the x-component of a spin polarized in the positive z-direction and then play this same game of erasing the memory of the AI
But there's the rub. What does it mean to have quantum computer measure something that is then quantum erased? How is that different from simply not measuring it and erasing the data...which has already been done. What is that extra thing the quantum computer does that allows it to say, "Yes I measured which way it went." and why should we believe it? I think such a thing may well be impossible to determine.
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