Phase-Preserving Linear Amplifiers Not Simulable by the Parametric Amplifier
Phase-Preserving Linear Amplifiers Not Simulable by the Parametric Amplifier
It is commonly accepted that a parametric amplifier can simulate a phase-preserving linear amplifier regardless of how the latter is realized [C. M. Caves et al., Phys. Rev. A 86, 063802 (2012)]. If true, this reduces all phase-preserving linear amplifiers to a single familiar model. Here we disprove this claim …