2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/93753We describe the light-matter interaction of a single two level atom with the electromagnetic vacuum in terms of field and dipole variables by considering homodyne detection of the emitted fields. Spontaneous emission is then observed as a continuous fluctuating force acting on the atomic dipole. The effect of this force may be compensated and even reversed by feedback.5 pages Latex, contribution to the proceedings of the ISQM98 conference held August 24th to 27th in TokyoQuantum PhysicsAtomic PhysicsOpticstext