  We have analyzed in detail the angular polarization properties in the center
of mass reference frame of Landau's two-photon spherical states in momentum
space. The angular distributions for fixed values of $J$ and $M$ do not depend
on the parity but are defined by two different functions of the polar angle
between the relative momentum and the quantization axes. The two-photon
polarization density matrices are derived for each values of $J$, $M$, and $P$.
The linear polarization correlations of individual photons are analyzed in
detail. We find, besides the usual correlation laws for $J\geq 2$ in terms of
$sin$ and $cos$ of the angle between the orientation of the analyzers,
correlations in terms of the sum of the orientation angles of the analyzers.
