講演情報
[18a-WL2_201-10][The 59th Young Scientist Presentation Award Speech] Nonlocal Behavior of Landau Polaritons in Nanoslots in the Ultrastrong Coupling Regime
〇Sae R. Endo1, Dasom Kim1, Shuang Liang2, Geon Lee3, Sunghwan Kim4, Alan Covarrubias-Morales1, Minah Seo5, Michael J. Manfra2, Dukhyung Lee6, Motoaki Bamba7, Junichiro Kono1 (1.Rice Univ., 2.Purdue Univ., 3.Korea Inst. of Sci. and Tech., 4.Ulsan National Inst. of Sci. and Tech., 5.Sogang Univ., 6.Mohammed VI Polytechnic Univ., 7.Yokohama National Univ.)
キーワード：
Landau polaritons、Nonlocality、Ultrastrong coupling
Landau polaritons form when cavity photons strongly couple, or hybridize, with the cyclotron resonance of a two-dimensional electron gas (2DEG) in a strong perpendicular magnetic field. Recently, some nonlocal (i.e., k ≠ 0 where k is the in-plane wave vector of matter excitation) aspects of them have been studied in the ultrastrong coupling regime where the Rabi frequency becomes a significant fraction of the bare frequencies of light and matter, enabled by small-mode-volume plasmonic cavities. However, their connections to local phenomena remain elusive. Here, we report various nonlocal features of Landau polaritons in nanoslots, including observation of coupling between local and nonlocal matter excitations.