[20a-P3-1~13] 3.11 Photonic structures and phenomena

[20a-P3-5] Analysis of PT-symmetric and topological tansition with entanglement entropy

〇Hideaki Taniyama^1,2, Masaya Notomi^1,2 (1.NTT NPC, 2.NTT BRL)

Keywords:edge mode, honeycomb lattice, entanglement entropy

We use entanglement entropy to analyze the edge mode of honeycomb ribbons, which have gain and loss. Through analysis, we show that it is possible to analyze the situation of PT symmetry breaking and topological phase transition in more detail.