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Coherent population transfer between uncoupled or weakly coupled states in ladder-type superconducting qutrits

Author

Listed:
  • H. K. Xu

    (Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences)

  • C. Song

    (Zhejiang University)

  • W. Y. Liu

    (Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences)

  • G. M. Xue

    (Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences)

  • F. F. Su

    (Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences)

  • H. Deng

    (Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences)

  • Ye Tian

    (Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences)

  • D. N. Zheng

    (Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences)

  • Siyuan Han

    (Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
    University of Kansas)

  • Y. P. Zhong

    (Zhejiang University)

  • H. Wang

    (Zhejiang University)

  • Yu-xi Liu

    (Institute of Microelectronics, Tsinghua University
    Tsinghua National Laboratory for Information Science and Technology (TNList))

  • S. P. Zhao

    (Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
    Collaborative Innovation Center of Quantum Matter)

Abstract

Stimulated Raman adiabatic passage offers significant advantages for coherent population transfer between uncoupled or weakly coupled states and has the potential of realizing efficient quantum gate, qubit entanglement and quantum information transfer. Here we report on the realization of the process in the superconducting Xmon and phase qutrits—two ladder-type three-level systems in which the ground state population is coherently transferred to the second excited state via the dark state subspace. We demonstrate that the population transfer efficiency is no less than 96% and 67% for the two devices, which agree well with the numerical simulation of the master equation. Population transfer via stimulated Raman adiabatic passage is significantly more robust against variations of the experimental parameters compared with that via the conventional resonant π pulse method. Our work opens up a new venue for exploring the process for quantum information processing using the superconducting artificial atoms.

Suggested Citation

  • H. K. Xu & C. Song & W. Y. Liu & G. M. Xue & F. F. Su & H. Deng & Ye Tian & D. N. Zheng & Siyuan Han & Y. P. Zhong & H. Wang & Yu-xi Liu & S. P. Zhao, 2016. "Coherent population transfer between uncoupled or weakly coupled states in ladder-type superconducting qutrits," Nature Communications, Nature, vol. 7(1), pages 1-6, April.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11018
    DOI: 10.1038/ncomms11018
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