2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/53535It is shown that it is possible to measure the Schrödinger wave of a single quantum system. This provides a strong argument for associating physical reality with a quantum state of a single system in sharp contrast with the usual approach in which the physical meaning of a quantum state is related only to an ensemble of identical systems. An apparent paradox between measurability of a quantum state of a single system and the relativistic causality is resolved.8, TAUP 2020-93#High Energy Physics - Theorytext