Figure 1
From: Taming numerical errors in simulations of continuous variable non-Gaussian state preparation

Variation of the conditional preparation scheme. We start with a two mode squeezed vacuum state \(\left| \gamma \right\rangle\). One of its modes is then displaced with \({\hat{D}}(\xi )\) and measured, using either APD, PNRD or an APD cascade approximating PNRD. The detection outcome is characterized by the POVM element \({\hat{\Pi }}\). We model overall losses and inefficiencies within the scheme using a beam splitter with intensity transmittance \(\eta\) to represent attenuation of the signal state in the setup.