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by ScottAaronson
2904 days ago
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When the quantum computation is finished, you suck it up and you measure. The entire point of the quantum algorithm was to set things up in such a way that, even as the measurement destroys the superposition state, the right answer is observed with a high probability (since you used constructive and destructive interference to boost its amplitude, while suppressing the amplitudes of the wrong answers). |
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