  We report a resource-efficient scheme in which a single pump laser was used
to achieve frequency conversion by Bragg-scattering four-wave mixing in a
photonic crystal fiber. We demonstrate bidirectional conversion of coherent
light between Sr+ P1/2 - D3/2 emission wavelength at 1092 nm and the
telecommunication C band with conversion efficiencies of 4.2 % and 37 % for up-
and down-conversion, respectively. We discuss how the scheme may be viably
scaled to meet the temporal, spectral and polarisation stability requirements
of a hybrid light-matter quantum network.
