Valley-controlled directional coupling to plasmonic nanowire modes

Su Hyun Gong, Filippo Alpeggiani, Beniamino Sciacca, Erik C. Garnett, L. Kuipers

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The chiral interaction between transverse optical spin and circularly polarized emitters provides a novel way to manipulate spin information at the nanoscale. Here, we demonstrate the valley(spin)-dependent directional emission of transition metal chalcogenides (TMDs) into plasmonic eigenstates of a silver nanowire. Due to the spin-path locking of the plasmonic eigenstates, the emission from the two different valleys of TMDs material will couple to the guided modes propagating in opposite directions. The high valley polarization of TMDs and high density of the transverse optical spin of the plasmonic wire together offer a novel platform for a chiral network even at room temperature without any magnetic fields.

Original languageEnglish
Title of host publicationCLEO
Subtitle of host publicationQELS_Fundamental Science, CLEO_QELS 2018
PublisherOptica Publishing Group (formerly OSA)
ISBN (Print)9781943580422
Publication statusPublished - 2018
Externally publishedYes
EventCLEO: QELS_Fundamental Science, CLEO_QELS 2018 - San Jose, United States
Duration: 2018 May 132018 May 18

Publication series

NameOptics InfoBase Conference Papers
VolumePart F93-CLEO_QELS 2018
ISSN (Electronic)2162-2701


OtherCLEO: QELS_Fundamental Science, CLEO_QELS 2018
Country/TerritoryUnited States
CitySan Jose

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials


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