High-cooperativity cavity magnon-polariton using a high-<i>Q</i>dielectric resonator

  • Keisuke Kato
    Department of Applied Physics, Graduate School of Engineering, The University of Tokyo 1 , Bunkyo-ku, Tokyo 113-8656, Japan
  • Ryo Sasaki
    RIKEN Center for Quantum Computing (RQC) 2 , Wako, Saitama 351-0198, Japan
  • Kohei Matsuura
    Department of Applied Physics, Graduate School of Engineering, The University of Tokyo 1 , Bunkyo-ku, Tokyo 113-8656, Japan
  • Koji Usami
    Department of Applied Physics, Graduate School of Engineering, The University of Tokyo 1 , Bunkyo-ku, Tokyo 113-8656, Japan
  • Yasunobu Nakamura
    Department of Applied Physics, Graduate School of Engineering, The University of Tokyo 1 , Bunkyo-ku, Tokyo 113-8656, Japan

書誌事項

公開日
2023-08-23
資源種別
journal article
DOI
  • 10.1063/5.0164545
公開者
AIP Publishing

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説明

<jats:p>The hybrid system consisting of microwave photons and ferromagnetic magnons has been studied in the context of quantum sensing and quantum manipulation of magnons. We demonstrate a strong coupling between magnons and photons in a dielectric resonator with a large dielectric constant and high quality factor. The coupling rate between magnons and photons amounts to g/2π=126 MHz, and the corresponding cooperativity reaches C=1.09×106 at cryogenic temperature. The high cooperativity is mainly due to the small internal decay rate of the resonator, which is advantageous for various quantum magnonics experiments.</jats:p>

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