Spectral-angular parametrization of open qudit dynamics: gap coordinates, Cartan structure, and GKLS decoupling

Jean-Pierre Gazeau, Kaoutar El Bachiri, Zakaria Bouameur +1

Every $n$-level density matrix can be diagonalized as $\rho =U\mathrm{diag}(p_1,\dots ,p_n)U^{†}$, splitting it into an eigenvalue vector $(p_1,\dots ,p_n)$ and a unitary eigenba…