2019年第80回応用物理学会秋季学術講演会

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一般セッション(口頭講演)

3 光・フォトニクス » 3.11 フォトニック構造・現象

[19p-E207-1~9] 3.11 フォトニック構造・現象

2019年9月19日(木) 13:15 〜 15:45 E207 (E207)

石崎 賢司(京大)

15:15 〜 15:30

[19p-E207-8] Photonic Antiferromagnetic Analogue

Moise Sotto1,2、Kapil Debnath3,1、Ali Khokhar1、Isao Tomita4、Yasuhiko Ishikawa2、Shinichi Saito1 (1.Uni. of Southampton、2.Toyohashi Uni. of Tech.、3.Indian Inst. of Tech.、4.National Inst. of Tech.)

キーワード:Photonic Crystal, Spin-Orbit Coupling of Light, Photonic Analogue System

We study the effect of breaking the parity of a photonic crystal waveguide, designed to have odd and even modes intersecting inside the photonic bandgap. We found that that the transverse spin and orbital parts of the angular momentum couple in the very slow-light regime by means of their local currents.
Moreover we uncover that a sub-bandgap opens between bands characterized by distinct organizations of this spin-orbit coupling at the nanoscale, revealing that spin angular momentum and orbital angular momentum of light organize in structural arrangement similar to anti-ferromagnets.