  We use shortcuts to adiabaticity, a method introduced to speed up adiabatic
quantum dynamics, for the efficient generation of entanglement between
exciton-polaritons in coupled semiconductor microcavities. A substantial
improvement is achieved, compared to a recently proposed method which
essentially enhances the nonlinearity of the system. Our method takes advantage
of a time-dependent nonlinearity which can become larger than the Josephson
coupling between the cavities, while the conventional method is restricted to a
constant nonlinearity lower than the coupling. The suggested procedure is
expected to find also application in other research areas in optics, where
nonlinear interacting bosons are encountered.
