  We propose a continuous variable analog of quantum controlled-NOT gates based
on a system of exciton-polaritons in semiconductor microcavities. This can be
realized by the engineering of parametric interaction between control and
target polariton modes, which can be varied in time. As an explicit setup we
use a system of dipolaritons, which allows for enhancement of parametric
interaction by auxiliary classical fields and scalable multigate system
realization. The calculated fidelity is shown to exceed 99% for realistic
system parameters.
