Hadamard Matrices from Mutually Unbiased Bases
arXiv:1002.4933 · doi:10.1063/1.3456082
Abstract
An analytical method for getting new complex Hadamard matrices by using mutually unbiased bases and a nonlinear doubling formula is provided. The method is illustrated with the n=4 case that leads to a rich family of eight-dimensional Hadamard matrices that depend on five arbitrary parameters whose modulus is equal to unity.