2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/162450Using the stabilizer formalism we construct the minimal code into a D-dimensional Hilbert space (qudit) to protect a qubit against phase damping. The effectiveness of this code is then studied by means of input-output fidelity.9 pages, 3 figures. REVTeXQuantum Physicstext