  We implement several non-binary logic systems using the spin dynamics of
nuclear spins in nuclear magnetic resonance (NMR). The NMR system is a suitable
test system because of its high degree of experimental control; findings from
NMR implementations are relevant for other computational platforms exploiting
particles with spin, such as electrons or photons. While we do not expect the
NMR system to become a practical computational device, it is uniquely useful to
explore strengths and weaknesses of unconventional computational approaches,
such as non-binary logic.
