2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/137568Two mode squeezed states can be used to achieve Heisenberg limit scaling in interferometry: a phase shift of $δϕ\approx 2.76 / < N >$ can be resolved. The proposed scheme relies on balanced homodyne detection and can be implemented with current technology. The most important experimental imperfections are studied and their impact quantified.4 pages, 7 figuresQuantum Physicstext