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The improvement of the multi-mode capability of quantum memory can furtherimprove the utilization efficiency of the quantum memory and reduce therequirement of quantum communication for storage units. In this letter, weexperimentally investigate the multi-mode light multiplexing storage of orbitalangular momentum (OAM) mode based on rubidium vapor, and demultiplexing by aphotonic OAM mode splitter which combines a Sagnac loop with two dove prisms.Our results show a mode extinction ratio higher than 80$\%$ at 1 $\mu$s ofstorage time. Meanwhile, two OAM modes have been multiplexing stored anddemultiplexed in our experimental configuration. We believe the experimentalscheme may provide a possibility for high channel capacity and multi-modequantum multiplexed quantum storage based on atomic ensembles.

The multiplexed light storage of Orbital Angular Momentum based on atomic ensembles