Photonic topological phase transition achieved by material phase transition Promising for reconfigurable functional photonic integrated circuit technologies

A collaborating team of NTT Corporation (NTT) and Tokyo Institute of Technology (Prof. Masaya Notomi in Physics Department) has succeeded in achieving photonic topological phase transition by material phase transition by employing novel hybrid nanostructures consisting of a phase-change material and a semiconductor nanostructure.

Figure 1. Summary of this work. Achievement of photonic topological phase transition induced by the material phase transition using hybrid photonic crystal structures.