• Corpus ID: 199472734

Representations of two-qubit and ququart states via discrete Wigner functions

  title={Representations of two-qubit and ququart states via discrete Wigner functions},
  author={Marcelo Aparecido Marchiolli and Di{\'o}genes Galetti},
  journal={arXiv: Quantum Physics},
By means of a well-grounded mapping scheme linking Schwinger unitary operators and generators of the special unitary group $\mathrm{SU(N)}$, it is possible to establish a self-consistent theoretical framework for finite-dimensional discrete phase spaces which has the discrete $\mathrm{SU(N)}$ Wigner function as a legitimate by-product. In this paper, we apply these results with the aim of putting forth a detailed study on the discrete $\mathrm{SU(2)} \otimes \mathrm{SU(2)}$ and $\mathrm{SU(4… 

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