  We propose a new architecture for the measurement-based quantum computation
model. The new design relies on small composite light-atom primary clusters.
These are then assembled into cluster arrays using ancillary light modes and
the actual computation is run on such a cellular cluster. We show how to create
the primary clusters, which are Gaussian cluster states composed of both light
and atomic modes. These are entangled via QND interactions and beamsplitters
and the scheme is well described within the continuous-variable covariance
matrix formalism.
