  Heterostructures formed by quantum Hall systems and superconductors have
recently been shown to support widely coveted Majorana fermion zero-modes and
still more exotic `parafermionic' generalizations. Here we establish that
probing such zero-modes using quantum Hall edge states yields non-local
transport signatures that pave the way towards a variety of novel circuit
elements. In particular, we demonstrate quite generally that at low energies
the zero-modes convert chirally moving quasiparticles into oppositely charged
quasiholes propagating in the same direction---that is, they swap the sign of
the chiral edge currents. One may then construct new and potentially useful
circuit elements using this `perfect Andreev conversion' process, including
superconducting current and voltage mirrors as well as transistors for
fractional charge currents. Characterization of these circuit elements should
provide striking evidence of the zero-mode physics.
