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PreprintCC BY-NC-SA 4.0arXiv

Planar metal-semiconductor Yagi-Uda type antennas for tunable narrow-linewidth quantum dot emitters

  • Ievgen Brytavskyi
  • Andreas Kitzmüller
  • Santanu Manna
  • Gabriel Undeutsch
  • Christian Weidinger
  • Thomas Oberleitner
  • Ailton J. Garcia, Jr.
  • Saimon Filipe Covre da Silva
  • Josef Resl
  • Raphael Joos
  • Robert Sittig
  • Michael Jetter
3 more authors
  • Simone L. Portalupi
  • Peter Michler
  • Armando Rastelli
Open at sourcePDFDOICite

Abstract

Tunable photonic architectures that improve the extraction efficiency of light from embedded epitaxial quantum dots across a wide spectral range are key enablers for developing bright sources of single and indistinguishable photons. In this study, we experimentally demonstrate planar multilayer antenna structures consisting of epitaxially grown AlGaAs and InGaAs membranes containing quantum dots sandwiched between metallic Au (or Ag) reflector and director layers together with Al2O3 spacer layers. We show that the linewidths and fine-structure splitting of the neutral exciton emission remain comparable to those measured in the corresponding unprocessed samples, demonstrating that the fabrication process preserves the optical quality of the emitters. In addition to broadband operation, we demonstrate that the planar architecture is compatible with electrical tuning via integrated diode structures, and strain tuning using piezoelectric actuators. In spite of limitations related to optical losses in the ultrathin metallic layers, the demonstrated fabrication simplicity, scalability, and compatibility with tunable quantum emitters establish planar antennas as a promising platform for solid-state quantum photonic devices.

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Cite

BibTeXRIS
BibTeX
@misc{brytavskyi2026planar,
  title = {{Planar metal-semiconductor Yagi-Uda type antennas for tunable narrow-linewidth quantum dot emitters}},
  author = {Ievgen Brytavskyi and Andreas Kitzmüller and Santanu Manna and Gabriel Undeutsch and Christian Weidinger and Thomas Oberleitner and Ailton J. Garcia, Jr. and Saimon Filipe Covre da Silva and Josef Resl and Raphael Joos and Robert Sittig and Michael Jetter and Simone L. Portalupi and Peter Michler and Armando Rastelli},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.07317},
  eprint = {2609.07317},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.07317},
  note = {CC BY-NC-SA 4.0},
}
RIS
TY  - UNPB
TI  - Planar metal-semiconductor Yagi-Uda type antennas for tunable narrow-linewidth quantum dot emitters
AU  - Ievgen Brytavskyi
AU  - Andreas Kitzmüller
AU  - Santanu Manna
AU  - Gabriel Undeutsch
AU  - Christian Weidinger
AU  - Thomas Oberleitner
AU  - Ailton J. Garcia, Jr.
AU  - Saimon Filipe Covre da Silva
AU  - Josef Resl
AU  - Raphael Joos
AU  - Robert Sittig
AU  - Michael Jetter
AU  - Simone L. Portalupi
AU  - Peter Michler
AU  - Armando Rastelli
PY  - 2026
DA  - 2026/09/07
PB  - arXiv
DO  - 10.48550/arxiv.2609.07317
UR  - https://arxiv.org/abs/2609.07317
AB  - Tunable photonic architectures that improve the extraction efficiency of light from embedded epitaxial quantum dots across a wide spectral range are key enablers for developing bright sources of single and indistinguishable photons. In this study, we experimentally demonstrate planar multilayer antenna structures consisting of epitaxially grown AlGaAs and InGaAs membranes containing quantum dots sandwiched between metallic Au (or Ag) reflector and director layers together with Al_2O_3 spacer layers. We show that the linewidths and fine-structure splitting of the neutral exciton emission remain comparable to those measured in the corresponding unprocessed samples, demonstrating that the fabrication process preserves the optical quality of the emitters. In addition to broadband operation, we demonstrate that the planar architecture is compatible with electrical tuning via integrated diode structures, and strain tuning using piezoelectric actuators. In spite of limitations related to optical losses in the ultrathin metallic layers, the demonstrated fabrication simplicity, scalability, and compatibility with tunable quantum emitters establish planar antennas as a promising platform for solid-state quantum photonic devices.
ER  -