  Measures of entanglement can be employed for the analysis of numerous quantum
information protocols. Due to computational convenience, logarithmic negativity
is often the choice in the case of continuous variable systems. In this work,
we analyse a continuous variable measurement-based entanglement distillation
experiment using a collection of entanglement measures. This includes:
logarithmic negativity, entanglement of formation, distillable entanglement,
relative entropy of entanglement, and squashed entanglement. By considering the
distilled entanglement as a function of the success probability of the
distillation protocol, we show that the logarithmic negativity surpasses the
bound on deterministic entanglement distribution at a relatively large
probability of success. This is in contrast to the other measures which would
only be able to do so at much lower probabilities, hence demonstrating that
logarithmic negativity alone is inadequate for assessing the performance of the
distillation protocol. In addition to this result, we also observed an increase
in the distillable entanglement by making use of upper and lower bounds to
estimate this quantity. We thus demonstrate the utility of these theoretical
tools in an experimental setting.
