  Superconducting junctions with a ferromagnet as the weak link, where triplet
correlations can transport supercurrents over a substantial distance, have been
of long-standing interest. In this work, we study the triplet transport in
planar La$_{0.7}$Sr$_{0.3}$MnO$_3$ (LSMO) nanowire Josephson junctions with
NbTi superconducting contacts. By meticulous ion etching with an artificial Pt
hard mask, the NbTi/LSMO bilayer is structured to form an LSMO bridge without
damaging its top layer. We observe superconducting (critical) currents of the
order of 10$^{9}$ A/m$^2$ in a junction with a length of 1.3 $\mu$m, and
distinguishing superconducting quantum interference (SQI) patterns when
sweeping a magnetic field perpendicular ($B_\perp$) to the plane of the wire or
parallel ($B_\parallel$) to the plane and along the wire. The observed
Gaussian-shaped SQI pattern is attributed to the diffusive transport of triplet
pairs in the LSMO. Our work demonstrates that combinations of oxide magnets
with conventional ($s$-wave) alloy superconductors can be a promising new route
to realizing superconducting spintronics.
