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1 IPNL - Institut de Physique Nucléaire de Lyon

Abstract : The present chapter submitted for publication in -Fourier Transforms, Theory and Applications-, G. Nikolic Ed., InTech Open Access Publisher, Vienna, 2011 is concerned with the introduction and study of a quadratic discrete Fourier transform. This Fourier transform can be considered as a two-parameter extension, with a quadratic term, of the usual discrete Fourier transform. In the case where the two parameters are taken to be equal to zero, the quadratic discrete Fourier transform is nothing but the usual discrete Fourier transform. The quantum quadratic discrete Fourier transform plays an important role in the field of quantum information. In particular, such a transformation in prime dimension can be used for obtaining a complete set of mutually unbiased bases.

Keywords : quadratic discrete Fourier transform mutually unbiased bases Weyl pairs Pauli operators Lie algebras





Author: Maurice Robert Kibler -

Source: https://hal.archives-ouvertes.fr/



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