2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/115851We experimently demonstrate the interference of dephasing quantum channel using single photon Mach-Zender interferometer. We extract the information inaccessible to the technology of quantum tomography. Further, We introduce the application of our results in quantum key distribution.3 pages, 5 figuresQuantum Physicstext