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Intrinsic Quantum Beats of Atomic Populations and Their Nanoscale Realization Through Resonant Plasmonic Antenna

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Abstract

In the coherently trapped populations of a four-level atom, we demonstrated the quantum beats with different mechanism, which originate from the interference between transition channels with different dipole moments. The beat frequency is determined by the intrinsic atomic parameters, i.e., the spacing of upper levels and ratio of dipole moments. The resonant plasmonic nanoantenna, as a candidate for the creation of anisotropic vacuum, was proposed to achieve the nanoscale realization of the quantum beats, spontaneous emission cancellation, and Rabi oscillation in two-photon correlations through the enhanced near-field and modified decay rates.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China under Grants No. 10874004 and 10821062 and the National Key Basic Research Program under Grant No. 2007CB307001. We would like to thank Professors Xiaoyong Hu, Gaoxiang Li, and Jie Zhang for their helpful discussions.

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Authors and Affiliations

  1. State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing, 100871, China

    Ying Gu, Luojia Wang, Pan Ren & Qihuang Gong

  2. State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan, 030006, China

    Junxiang Zhang & Tiancai Zhang

  3. Department of Physics, Tongji University, Shanghai, 200092, China

    Jing-Ping Xu

  4. Beijing Computational Science Research Center, Beijing, 100084, China

    Shi-Yao Zhu

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  1. Ying Gu
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  2. Luojia Wang
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  3. Pan Ren
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  4. Junxiang Zhang
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  5. Tiancai Zhang
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  6. Jing-Ping Xu
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  7. Shi-Yao Zhu
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  8. Qihuang Gong
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Correspondence to Ying Gu.

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Gu, Y., Wang, L., Ren, P. et al. Intrinsic Quantum Beats of Atomic Populations and Their Nanoscale Realization Through Resonant Plasmonic Antenna. Plasmonics 7, 33–38 (2012). https://doi.org/10.1007/s11468-011-9272-x

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  • DOI: https://doi.org/10.1007/s11468-011-9272-x

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