Self-localized states in photonic topological insulators

Yaakov Lumer, Yonatan Plotnik, Mikael C. Rechtsman, Mordechai Segev

Research output: Contribution to journalArticlepeer-review

207 Scopus citations


We propose solitons in a photonic topological insulator: self-localized wave packets forming topological edge states residing in the bulk of a nonlinear photonic topological insulator. These self-forming entities exhibit, despite being in the bulk, the property of unidirectional transport, similar to the transport their linear counterparts display on the edge of a topological insulator. In the concrete case of a Floquet topological insulator, such a soliton forms when a wave packet induces, through nonlinearity, a defect region in a honeycomb lattice of helical optical waveguides, and at the same time the wave packet populates a continuously rotating outer (or inner) edge state of that region. The concept is universal and applicable to topological systems with nonlinear response or mean-field interactions.

Original languageEnglish (US)
Article number243905
JournalPhysical review letters
Issue number24
StatePublished - Dec 12 2013

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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