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arXiv · 1706.01404

High efficiency photonic storage of single photons in cold atoms

Jianfeng Li·Yunfei Wang·Shanchao Zhang·Junyu He·Aiqin Cheng·Hui Yan·Shi-Liang Zhu
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Abstract

An efficient quantum storage is highly desired for quantum information processing. As indicated by certain applications, a universal quantum storage is required to have a storage efficiency above 50% to beat the no-cloning limit. Although significant progress has been achieved in improving various quantum storage, the best storage efficiency of single photons is still below this criteria. By integrating a highly controllable single photon source with an optimized quantum storage, here we demonstrate an optical storage of single photons with storage efficiency of 65% in a cold atomic ensemble based on electromagnetically induced transparency. Meanwhile, the nonclassical characteristics of our storage are verified through the well-maintained nonclassical and single photon nature of the retrieved single photons.

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Jianfeng Li, Yunfei Wang, Shanchao Zhang, Junyu He, Aiqin Cheng, Hui Yan, Shi-Liang Zhu. 2017-06-05. High efficiency photonic storage of single photons in cold atoms. https://arxiv.org/abs/1706.01404

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