2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/212047We suggest a self-testing teleportation configuration for photon q-bits based on a Mach-Zehnder interferometer. That is, Bob can tell how well the input state has been teleported without knowing what that input state was. One could imagine building a "locked" teleporter based on this configuration. The analysis is performed for continuous variable teleportation but the arrangement could equally be applied to discrete manipulations.4 pages, 5 figuresQuantum Physicstext