  Inherent spin angular momentum (SAM) and orbital angular momentum (OAM) which
manifest as polarization and spatial degrees of freedom (DOF) of photons, hold
a promise of large capability for applications in classical and quantum
information processing. To enable these photonic spin and orbital dynamic
properties strongly coupled with each other, Poincar\'{e} states have been
proposed and offer advantages in data multiplexing, information encryption,
precision metrology, and quantum memory. However, since the transverse size of
Laguerre Gaussian beams strongly depends on their topological charge numbers
$\left| l \right|$, it is difficult to store asymmetric Poincar\'{e} states due
to the significantly different light-matter interaction for distinct spatial
modes. Here, we experimentally realize the storage of perfect Poincar\'{e}
states with arbitrary OAM quanta using the perfect optical vortex, in which 121
arbitrarily-selected perfect Poincar\'{e} states have been stored with high
fidelity. The reported work has great prospects in optical communication and
quantum networks for dramatically increased encoding flexibility of
information.
