2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/91442A quantum key distribution protocol based on time coding uses delayed one photon pulses with minimum time-frequency uncertainty product. Possible overlap between the pulses induces an ambiguous delay measurement and ensures a secure key exchange.2 pages, 2 figures, Proceedings from the QELS conference, may 19-24, 2002, QThG4 pp 201-202Quantum Physicstext