Photonic topological insulators are artificial electromagnetic materials that support topologically non-trivial, unidirectional states of light.[1] Photonic topological phases are classical electromagnetic wave analogues of electronic topological phases studied in condensed matter physics. Similar to their electronic counterparts, they, can provide robust unidirectional channels for light propagation.[2] The field that studies these phases of light is referred to as topological photonics.
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- ^ Ozawa, Tomoki; Price, Hannah M.; Amo, Alberto; Goldman, Nathan; Hafezi, Mohammad; Lu, Ling; Rechtsman, Mikael C.; Schuster, David; Simon, Jonathan; Zilberberg, Oded; Carusotto, Iacopo (25 March 2019). "Topological photonics". Reviews of Modern Physics. 91 (1): 015006. arXiv:1802.04173. Bibcode:2019RvMP...91a5006O. doi:10.1103/RevModPhys.91.015006. S2CID 10969735.