Journal
PHYSICAL REVIEW LETTERS
Volume 114, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.114.116401
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Funding
- ITN INDEX [289968]
- ANR Labex Ganex [ANR-11-LABX-0014]
- IRSES POLAPHEN [246912]
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We demonstrate that honeycomb arrays of microcavity pillars behave as an optical-frequency two-dimensional photonic topological insulator. We show that the interplay between the photonic spin-orbit coupling natively present in this system and the Zeeman splitting of exciton polaritons in external magnetic fields leads to the opening of a nontrivial gap characterized by a C = +/- 2 set of band Chern numbers and to the formation of topologically protected one-way edge states.
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