Preserve a squeezed variance
Ordinary vacuum variance is normalized to 1. The ideal loss model is Vout=ηVin+(1−η).
Amplitude-noise factor is the square root of variance. Neither quantity is a full detector sensitivity curve.
Ideal single-quadrature mixing only. No squeezing-angle error, frequency rotation, radiation-pressure coupling, optical layout, or classical detector noise is included. This is not a claim about measured LIGO performance.