2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/93119I design a simple way of distinguishing non-orthogonal quantum states with perfect reliability using only quantum control-not gates in one condition. In this way, we can implement pure quantum communication in directly sending classical information, Ekert quantum cryptography and quantum teleportation without the help of classical communications channel.6 pages, 1 figureQuantum Physicstext