  We propose a scheme for distributing continuous variable entanglement
originally established among a pair of mode between a set of four orthogonal
co-propagating modes. This is accomplished by exploiting the possibility of
coupling polarization with optical angular momentum provided by the q-plate.
Here we present the principle of the proposed scheme with a short feasibility
study that shows that the four-modes covariance matrix at the scheme output
represent an entangled multi mode system.
