Quasi-triply-degenerate states and zero refractive index in two-dimensional all-dielectric photonic crystals
Innem V. A. K. Reddy, Viktor Sukhotskiy, Alexander Baev, Kai Liu, Joseph W. Haus, Kazuaki Sakoda, Edward Furlani, Jianjun Liu, Shuangchun Wen, Paras N. Prasad.
