  The generation of squeezed Fock states by the one or more photon subtraction
from a two-mode entangled Gaussian state using a beam splitter and a
controlled-Z operation is addressed. From two different perspectives, we
analyzed two entanglement transformations in the protocol. We evaluated the
energy costs and resource requirements of the analyzed schemes. Furthermore, we
studied the impact of experimental imperfections on the non-Gaussian states
generated by measuring the number of particles. We explored the effects of
photon loss and imperfect detectors on the squeezed Fock state generation
protocol.
