2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/96251We show that the quantum locking scheme recently proposed by Courty {\it et al.} [Phys. Rev. Lett. {\bf 90}, 083601 (2003)] for the reduction of back action noise is able to significantly improve the sensitivity of the next generation of gravitational wave interferometers.12 pages, 2 figures, in print in the Special Issue of J. Opt. B on Fluctuations and Noise in Photonics and Quantum OpticsGeneral Relativity and Quantum CosmologyQuantum Physicstext