  We explore the conditions under which identical particles in unitary linear
networks behave as the other species, i.e. bosons as fermions and fermions as
bosons. It is found that the Boson-Sampling computer of Aaronson & Arkhipov can
be implemented in an interference experiment with non-interacting fermions in
an appropriately entangled state. Moreover, a scheme is proposed which
simulates the scattershot version of the Boson-Sampling computer by preparing,
on the fly, the required entangled state of fermions from an unentangled one.
