2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/88894Backaction evasion measurements of a quadrature component of the light field vacuum necessarily induce quantum jumps in the photon number. The correlation between measurement results and quantum jump events reveals fundamental nonclassical aspects of quantization.3 pages, including 2 figures, contribution for the Technical Digest of the conference on Nonlinear Optics, held August 2000 in HawaiiQuantum Physicstext