Slobozhanyuk, Alexey P.Poddubny, Alexander N.Sinev, Ivan S.Samusev, Anton K.Yu, Ye FengKuznetsov, Arseniy I.Miroshnichenko, AndreyKivshar, Yuri2016-08-262016-08-261863-8880http://hdl.handle.net/1885/107321Photonic structures offer unique opportunities for controlling light-matter interaction, including the photonic spin Hall effect associated with the transverse spin-dependent displacement of a light beam that propagates in specially designed optical media. However, due to small spin-orbit coupling, the photonic spin Hall effect is usually weak at the nanoscale. Here we suggest theoretically and demonstrate experimentally, in both optics and microwave experiments, the photonic spin Hall effect enhanced by topologically protected edge states in subwavelength arrays of resonant dielectric particles. Based on direct near-field measurements, we observe the selective excitation of the topological edge states controlled by the handedness of the incident light. Additionally, we reveal the main requirements to the symmetry of photonic structures to achieve the topology-enhanced spin Hall effect, and also analyse the robustness of the photonic edge states against the long-range coupling. (Figure presented.) .Thiswork was supported by the Australian Research Council, the Rus-sian Foundation for Basic Research (grant 15-32-20866). The ex-perimental research has been financially supported by RussianScience Foundation (grant No.16-19-10538). ANP acknowledgesa support of the Russian President Grant (MK-8500.2016.2). APSacknowledges support of the IEEE MTT-S Graduate Fellowshipfor 2016. YFY and AIK were supported by the DSI core funds andA*STAR SERC Pharos program (grant No. 152 73 00025).© 2016 by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheimedge statesoptical spin Hall effectspin–orbit couplingtopological photonics201610.1002/lpor.201600042