論文

査読有り 本文へのリンクあり 国際共著 国際誌
2018年8月

Observation of Dicke cooperativity in magnetic interactions

Science
  • Xinwei Li
  • ,
  • Motoaki Bamba
  • ,
  • Ning Yuan
  • ,
  • Qi Zhang
  • ,
  • Yage Zhao
  • ,
  • Maolin Xiang
  • ,
  • Kai Xu
  • ,
  • Zuanming Jin
  • ,
  • Wei Ren
  • ,
  • Guohong Ma
  • ,
  • Shixun Cao
  • ,
  • Dmitry Turchinovich
  • ,
  • Junichiro Kono

361
6404
開始ページ
794
終了ページ
797
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1126/science.aat5162
出版者・発行元
American Association for the Advancement of Science ({AAAS})

The interaction of N two-level atoms with a single-mode light field is an extensively studied many-body problem in quantum optics, first analyzed by Dicke in the context of superradiance. A characteristic of such systems is the cooperative enhancement of the coupling strength by a factor of N1/2. In this study, we extended this cooperatively enhanced coupling to a solid-state system, demonstrating that it also occurs in a magnetic solid in the form of matter-matter interaction. Specifically, the exchange interaction of N paramagnetic erbium(III) (Er3+) spins with an iron(III) (Fe3+) magnon field in erbium orthoferrite (ErFeO3) exhibits a vacuum Rabi splitting whose magnitude is proportional to N1/2. Our results provide a route for understanding, controlling, and predicting novel phases of condensed matter using concepts and tools available in quantum optics.

リンク情報
DOI
https://doi.org/10.1126/science.aat5162

エクスポート
BibTeX RIS