Print Email Facebook Twitter Nanoscale chiral valley-photon interface through optical spin-orbit coupling Title Nanoscale chiral valley-photon interface through optical spin-orbit coupling Author Gong, S. (TU Delft QN/Kuipers Lab; AMOLF; Kavli institute of nanoscience Delft) Alpeggiani, F. (TU Delft QN/Kuipers Lab; AMOLF; Kavli institute of nanoscience Delft) Sciacca, Beniamino (AMOLF) Garnett, Erik C. (AMOLF) Kuipers, L. (TU Delft QN/Quantum Nanoscience; AMOLF; Kavli institute of nanoscience Delft) Department QN/Quantum Nanoscience Date 2018 Abstract The emergence of two-dimensional transition metal dichalcogenide materials has sparked intense activity in valleytronics, as their valley information can be encoded and detected with the spin angular momentum of light. We demonstrate the valley-dependent directional coupling of light using a plasmonic nanowire-tungsten disulfide (WS2) layers system. We show that the valley pseudospin in WS2 couples to transverse optical spin of the same handedness with a directional coupling efficiency of 90 ± 1%. Our results provide a platform for controlling, detecting, and processing valley and spin information with precise optical control at the nanoscale. To reference this document use: http://resolver.tudelft.nl/uuid:6cff0719-a2ec-489d-a834-769d86370a63 DOI https://doi.org/10.1126/science.aan8010 Embargo date 2018-07-26 ISSN 0036-8075 Source Science, 359 (6374), 443-447 Bibliographical note Accepted Author Manuscript Part of collection Institutional Repository Document type journal article Rights © 2018 S. Gong, F. Alpeggiani, Beniamino Sciacca, Erik C. Garnett, L. Kuipers Files PDF aan8010_preprint_Gong.pdf 991.08 KB Close viewer /islandora/object/uuid:6cff0719-a2ec-489d-a834-769d86370a63/datastream/OBJ/view