2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/92801We use a spin-1/2 model to analyze tunnelling in a double well system coupled to an external reservoir. We consider different noise sources such as fluctuations on the height and central position of the barrier and propose an experiment to observe these effects in trapped ions or atoms.submitted to PLA. 6 figuresQuantum Physicstext