  The interplay of confinement and Coulomb interactions in quantum dots can
lead to strongly correlated phases differing qualitatively from the Fermi
liquid behavior. We explore how the presence of magnetic impurities in quantum
dots can provide additional opportunities to study correlation effects and the
resulting ordering in carrier and impurity spin. By employing exact
diagonalization we reveal that seemingly simple two-carrier quantum dots lead
to a rich phase diagram. We propose experiments to verify our predictions, in
particular we discuss interband optical transitions as a function of
temperature and magnetic field.
