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High-performance cavity-enhanced quantum memory with warm atomic cell

Author

Listed:
  • Lixia Ma

    (Institute of Opto-Electronics, Shanxi University)

  • Xing Lei

    (Institute of Opto-Electronics, Shanxi University)

  • Jieli Yan

    (Institute of Opto-Electronics, Shanxi University)

  • Ruiyang Li

    (Institute of Opto-Electronics, Shanxi University)

  • Ting Chai

    (Institute of Opto-Electronics, Shanxi University)

  • Zhihui Yan

    (Institute of Opto-Electronics, Shanxi University
    Shanxi University)

  • Xiaojun Jia

    (Institute of Opto-Electronics, Shanxi University
    Shanxi University)

  • Changde Xie

    (Institute of Opto-Electronics, Shanxi University
    Shanxi University)

  • Kunchi Peng

    (Institute of Opto-Electronics, Shanxi University
    Shanxi University)

Abstract

High-performance quantum memory for quantized states of light is a prerequisite building block of quantum information technology. Despite great progresses of optical quantum memories based on interactions of light and atoms, physical features of these memories still cannot satisfy requirements for applications in practical quantum information systems, since all of them suffer from trade-off between memory efficiency and excess noise. Here, we report a high-performance cavity-enhanced electromagnetically-induced-transparency memory with warm atomic cell in which a scheme of optimizing the spatial and temporal modes based on the time-reversal approach is applied. The memory efficiency up to 67 ± 1% is directly measured and a noise level close to quantum noise limit is simultaneously reached. It has been experimentally demonstrated that the average fidelities for a set of input coherent states with different phases and amplitudes within a Gaussian distribution have exceeded the classical benchmark fidelities. Thus the realized quantum memory platform has been capable of preserving quantized optical states, and is ready to be applied in quantum information systems, such as distributed quantum logic gates and quantum-enhanced atomic magnetometry.

Suggested Citation

  • Lixia Ma & Xing Lei & Jieli Yan & Ruiyang Li & Ting Chai & Zhihui Yan & Xiaojun Jia & Changde Xie & Kunchi Peng, 2022. "High-performance cavity-enhanced quantum memory with warm atomic cell," Nature Communications, Nature, vol. 13(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-30077-1
    DOI: 10.1038/s41467-022-30077-1
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    References listed on IDEAS

    as
    1. Zhihui Yan & Liang Wu & Xiaojun Jia & Yanhong Liu & Ruijie Deng & Shujing Li & Hai Wang & Changde Xie & Kunchi Peng, 2017. "Establishing and storing of deterministic quantum entanglement among three distant atomic ensembles," Nature Communications, Nature, vol. 8(1), pages 1-8, December.
    2. Han Bao & Junlei Duan & Shenchao Jin & Xingda Lu & Pengxiong Li & Weizhi Qu & Mingfeng Wang & Irina Novikova & Eugeniy E. Mikhailov & Kai-Feng Zhao & Klaus Mølmer & Heng Shen & Yanhong Xiao, 2020. "Spin squeezing of 1011 atoms by prediction and retrodiction measurements," Nature, Nature, vol. 581(7807), pages 159-163, May.
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