Circulant Matrices, Gauss Sums and Mutually Unbiased Bases, I. The Prime Number Case
Author
Combescure, Monique
Abstract
In this paper, we consider the problem of Mutually Unbiased Bases in prime dimension d. It is known to provide exactly d + 1 mutually unbiased bases. We revisit this problem using a class of circulant d × d matrices. The constructive proof of a set of d + 1 mutually unbiased bases follows, together with a set of properties of Gauss sums, and of bi-unimodular sequences.