  We calculate the equilibrium properties and the dynamic response of two
vertically coupled circular quantum dots populated by particles of different
electrical charge sign, i.e. electrons and holes. The equilibrium density
profiles are obtained and used to compute the frequencies and oscillator
strengths of magnetoplasma excitations. We find a strong coupling between the
modes derived from the center-of-mass modes of the individual dots which leads
to an anticrossing with a pronounced oscillator strength transfer from the
``acoustic'' to the ``optical'' branch. Also, due to breaking of the
generalized Kohn theorem a number of other than center-of-mass modes are
excited whose oscillator strengths, however, are rather weak.
