  Integrable quantum mechanical systems for neutral particles with spin
$\frac12$ and nontrivial dipole momentum are classified. It is demonstrated
that such systems give rise to new exactly solvable problems of quantum
mechanics with clear physical content. Solutions for three of them are given in
explicit form. The related symmetry algebras and superalgebras are discussed.
The presented classification is restricted to two-dimensional systems which
admit matrix integrals of motion linear in momenta.
