  The paper studies the Raman quantum memory protocol as applied to quantum
light with orbital angular momentum. The memory protocol is implemented on an
ensemble of three-level cold atoms with the $\Lambda$- configuration of energy
levels. The possibility of storing quantum statistics of light with an orbital
momentum is analysed in the case when the driving field could be treated as a
plane wave. The efficiency analysis shows that examined storage/retrieval
processes do not cause the efficiency decreasing compared with the spatial
multimode memory protocol considered in [Golubeva et al. 2012]]. We also
present an effective transformation of the orbital angular momentum of a
quantum field on a memory cell using the driving field with orbital angular
momentum.
