  We investigate the memory of surface polariton (SP) via the
electromagnetically induced transparency (EIT) of quantum emitters doped at the
interface between a dielectric and a metamaterial. We show that, due to the
strong mode confinement provided by the interface, the EIT effect can be
largely enhanced; furthermore, the storage and retrieval of the SP can be
realized by switching off and on of a control laser field; additionally, the
efficiency and fidelity of the SP memory can be improved much by using a weak
microwave field. The results reported here are helpful not only for enhancing
the understanding of SP property but also for promising applications in quantum
information processing and transmission.
