J. Math. Phys.

**51**, 082101 (2010)

http://arxiv.org/abs/1008.2477

This parametrization is very useful for calculating the parameters that uniquely characterises a given unitary operator U(N). I show that instead of solving a complicated systems of non-linear equations one can perform very stable and efficient Householder transformations. Right now I am working on some practical applications based on that result.

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