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

Xin Yang; Hong Chang; Jinwen Wang; Yan Ma; Yun Chen; Shuwei Qiu; Zehao Shen; Chengyuan Wang; Quan Quan; Dong Wei; Haixia Chen; Mingtao Cao; Hong Gao; Fuli Li

arXiv · 2303.05661

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

Xin Yang·Hong Chang·Jinwen Wang·Yan Ma·Yun Chen·Shuwei Qiu·Zehao Shen·Chengyuan Wang·Quan Quan·Dong Wei·Haixia Chen·Mingtao Cao·Hong Gao·Fuli Li

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Abstract

The improvement of the multi-mode capability of quantum memory can further improve the utilization efficiency of the quantum memory and reduce the requirement of quantum communication for storage units. In this letter, we experimentally investigate the multi-mode light multiplexing storage of orbital angular momentum (OAM) mode based on rubidium vapor, and demultiplexing by a photonic 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 of storage time. Meanwhile, two OAM modes have been multiplexing stored and demultiplexed in our experimental configuration. We believe the experimental scheme may provide a possibility for high channel capacity and multi-mode quantum multiplexed quantum storage based on atomic ensembles.

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Xin Yang, Hong Chang, Jinwen Wang, Yan Ma, Yun Chen, Shuwei Qiu, Zehao Shen, Chengyuan Wang, Quan Quan, Dong Wei, Haixia Chen, Mingtao Cao, Hong Gao, Fuli Li. 2023-03-10. The multiplexed light storage of Orbital Angular Momentum based on atomic ensembles. https://arxiv.org/abs/2303.05661

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