Quantum hybrid plasmonic nanocircuits for versatile polarized photon generation

Cuo Wu, Shailesh Kumar, Danylo Komisar, Chao Meng, Yadong Deng, Zhiming Wang*, Sergey I. Bozhevolnyi, Fei Ding

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Hybrid plasmonic nanocircuits developed insofar enable efficient coupling and routing of single photons generated by embedded quantum emitters (QEs), providing at the same time little or no control over the polarization of out-coupled single photons. Here, with numerical simulations a QE-driven hybrid plasmonic nanocircuit for versatile polarized photon generation by using ultracompact polarization out-couplers in multi-branched dielectric-loaded plasmonic waveguides is proposed and demonstrated. Upon excitation of a QE, which is embedded at the center of a star-shaped six-branched hybrid plasmonic waveguide and characterized with a normal to the surface radiative transition dipole, plasmonic waveguide modes are efficiently (≈85%) excited and routed by the six-branched waveguide toward propitiously designed out-couplers. By exploiting two types of subwavelength polarization out-couplers producing linearly and circularly polarized free-space radiation, spatially separated single-photon generation channels characterized by four different linear and two circular polarizations are created. The demonstrated hybrid plasmonic nanocircuit addresses specifically the scenario where different quantum chips communicate via polarization-compatible channels, thereby opening new design possibilities for energy-efficient and ultracompact quantum photonic nanocircuits in nanophotonic quantum technologies.

Original languageEnglish
Article number2101596
JournalAdvanced Optical Materials
Volume10
Issue number6
Number of pages11
ISSN2195-1071
DOIs
Publication statusPublished - 18. Mar 2022

Bibliographical note

Publisher Copyright:
© 2022 Wiley-VCH GmbH

Keywords

  • polarization out-couplers
  • quantum emitters
  • quantum hybrid plasmonic nanocircuits
  • versatile polarized photon generation

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