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Performing Quantum Measurement in Suitably Entangled States Originates the Quantum Computation Speed Up

Giuseppe Castagnoli
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Abstract

We introduce a local concept of speed-up applicable to intermediate stages of a quantum algorithm. We use it to analyse the complementary roles played by quantum parallel computation and quantum measurement in yielding the speed-up. A severe conflict between there being a speed-up and the many worlds interpretation is highlighted.

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Giuseppe Castagnoli. 2000-05-17. Performing Quantum Measurement in Suitably Entangled States Originates the Quantum Computation Speed Up. https://arxiv.org/abs/quant-ph/0005069

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