EXPERIMENTAL TEST OF MODULAR NOISE-PROPAGATION THEORY FOR QUANTUM OPTICS

We present and test against experiment a general technique that allows modular modeling of noise propagation in quantum optics experiments. Specifically, we consider a multielement frequency-doubling experiment that ultimately produces 1.7 dB/32% (3.0 dB/50% inferred) squeezing a t 532 nm. Unlike previous theoretical treatments, we obtain completely analytical expressions for each element of the experiment. This allow s intuitive analysis and straightforward experimental modeling. The ex act role of driving noise is demonstrated: addition of a narrow linewi dth mode cleaning cavity to reduce the driving noise, improves the inf erred squeezing from 0.75 to 3.0 dB. We find excellent agreement betwe en the modular theory and experiment.