9:00 AM - 9:15 AM [7a-A410-1] [JSAP Young Scientist Award Speech] Photonic Topological Insulating Phase Induced by Gain and Loss 〇Kenta Takata1,2, Masaya Notomi1,2,3 (1.NTT NPC, 2.NTT BRL, 3.Tokyo Inst. Tech.)