[14p-K303-1~13] 10.2 スピン基盤技術・萌芽的デバイス技術

15:45 〜 16:00奨励賞エントリー英語発表

[14p-K303-9] Ultrastrong coupling of on-chip magnon polaritons in a YBCO superconducting resonator

〇(D)Shugo Yoshii^1,2, Manuel Muller³, Ryo Ohshima^1,2, Yuichiro Ando^1,2,4, Matthias Althammer³, Hans Huebl³, Masashi Shiraishi^1,2 (1.Kyoto Univ., 2.CSRN, Kyoto Univ., 3.WMI, 4.Osaka Metropolitan Univ.)

キーワード：

ultrastrong coupling、magnon polariton、coutner-rotating terms

In this study, we demonstrate the achievement of ultrastrong coupling of magnon polariton within a thin ferromagnetic film on high-T_C YBa₂Cu₃O₇ (YBCO) resonator. Moreover, we also observed the Bloch-Siegert shift, the signature of the existence of counter-rotating terms in the coupling system.