Uncertainty In Quantum Computation

Subhash Kak

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Uncertainty In Quantum Computation

Subhash Kak

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Abstract

We examine the effect of previous history on starting a computation on a quantum computer. Specifically, we assume that the quantum register has some unknown state on it, and it is required that this state be cleared and replaced by a specific superposition state without any phase uncertainty, as needed by quantum algorithms. We show that, in general, this task is computationally impossible.

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Subhash Kak. 2002-06-02. Uncertainty In Quantum Computation. https://arxiv.org/abs/quant-ph/0206006

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