  We propose a scheme for creating of a maximally entangled state comprising
two field quanta. In our scheme, two weak light fields, which are initially
prepared in either coherent or polarization states, interact with a composite
medium near an interface between a dielectric and a negative index
metamaterial. Such interaction leads to a large Kerr nonlinearity, reduction of
the group velocity of the light and significant confinement of the light fields
while simultaneously avoiding amplitude losses of the incoming radiation. All
these considerations make our scheme efficient.
