  The original proposal to achieve superconductivity by starting from a quantum
spin-liquid (QSL) and doping it with charge carriers, as proposed by Anderson
in 1987, has yet to be realized. Here we propose an alternative strategy: use a
QSL as a substrate for heterostructure growth of metallic films to design
exotic superconductors. By spatially separating the two key ingredients of
superconductivity, i.e., charge carriers (metal) and pairing interaction (QSL),
the proposed setup naturally lands on the parameter regime conducive to a
controlled theoretical prediction. Moreover, the proposed setup allows us to
"customize" electron-electron interaction imprinted on the metallic layer. The
QSL material of our choice is quantum spin ice well-known for its emergent
gauge-field description of spin frustration. Assuming the metallic layer forms
an isotropic single Fermi pocket, we predict that the coupling between the
emergent gauge-field and the electrons of the metallic layer will drive
topological odd-parity pairing. We further present guiding principles for
materializing the suitable heterostructure using ab initio calculations and
describe the band structure we predict for the case of
Y$_2$Sn$_{2-x}$Sb$_x$O$_7$ grown on the (111) surface of Pr$_2$Zr$_2$O$_7$.
Using this microscopic information, we predict topological odd-parity
superconductivity at a few Kelvin in this heterostructure, which is comparable
to the $T_c$ of the only other confirmed odd-parity superconductor
Sr$_2$RuO$_4$.
