  We investigate the possibility of using local magnetic fields to produce
one-dimensional traps in hybrid structures for any quasiparticle possessing
spin degree of freedom. We consider a system composed of a diluted magnetic
semiconductor quantum well buried below a micron-sized ferromagnetic island.
Localized magnetic field is produced by a rectangular ferromagnet in close
proximity of a single domain phase. We make quantitative predictions for the
optical response of the system as a function of distance between the
micromagnet and the quantum well, electronic g-factor, and thickness of the
micromagnet.
