  We analyze theoretically the spin dynamics of exciton-polaritons and photons
during their Bloch oscillations in a one-dimensional microwire. The wire
geometry induces an energy splitting between the longitudinal and transverse
electric polarized eigenmodes. We show analytically that a synchronized regime
between the Bloch oscillations in space and the precession of the pseudospin
can be achieved. This synchronization results in the formation of a THz
alternating spin current which can be extracted out of the confinement region
by the Landau-Zener tunneling towards the second allowed miniband. Finally we
show how the spin signal can be maintained despite of the lifetime of the
particles for the case of exciton-polaritons both in a resonant and non
resonant pumping schemes. The structure therefore acts as a Spin-optronic
device able to convert the polarization and emit spin polarized pulses.
