  We describe a multi-mode passive linear optical network which emulates the
two-photon number statistics of a beam splitter, irrespective on where the two
photons enter the network. This is done by firstly defining general properties
that the generator of the network matrix must fulfil. We then show that the
network's effective transmission coefficient can be freely set to replicate
either the absence of coincidence counts (i.e. the Hong-Ou-Mandel dip), or a
100% coincidence rate, as well as all possible two-photon beam splitter
statistics between these two extremal points. Finally, we demonstrate that this
network, in comparison to simpler systems, provides a better sampling rate and
other resource advantages.

Quantum Physics