Initializing the Amplitude Distribution of a Quantum State

Details Initializing the Amplitude Distribution of a Quantum State Initializing the Amplitude Distribution of a Quantum State

1998-07-18

arxiv.org/abs/quant-ph/9807054v1

Found.Phys.Lett. 12 (1999) 547-559

Physics

Quantum Physics

Scientific paper

To date, quantum computational algorithms have operated on a superposition of all basis states of a quantum system. Typically, this is because it is assumed that some function f is known and implementable as a unitary evolution. However, what if only some points of the function f are known? It then becomes important to be able to encode only the knowledge that we have about f. This paper presents an algorithm that requires a polynomial number of elementary operations for initializing a quantum system to represent only the m known points of a function f.

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