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Reprogrammable plasmonic topological insulators with ultrafast control.

Jian Wei You1,2, Qian Ma2, Zhihao Lan1

  • 1Department of Electronic and Electrical Engineering, University College London, London, UK.

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|September 16, 2021
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Summary
This summary is machine-generated.

Researchers developed a reprogrammable plasmonic topological insulator for ultrafast light manipulation. This dynamic platform enables nanosecond switching of topological properties, paving the way for advanced optical devices.

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Area of Science:

  • Topological photonics
  • Plasmonics
  • Nanophotonics

Background:

  • Topological photonics offers robust light manipulation through static structures.
  • Developing dynamic topological photonic platforms for ultrafast switching remains a significant challenge.

Purpose of the Study:

  • To theoretically propose and experimentally demonstrate a reprogrammable plasmonic topological insulator.
  • To achieve dynamic control of topological light propagation at the nanosecond level.

Main Methods:

  • Utilized electric switches for programmability of plasmonic topological insulator unit cells.
  • Fabricated the reprogrammable platform using printed circuit board technology.
  • Demonstrated dynamic encoding of unit cells by controlling digital plasmonic states without altering geometry or material parameters.

Main Results:

  • Achieved dynamic switching of topological propagation routes at nanosecond-level speeds.
  • Experimentally demonstrated an ultrafast multi-channel optical analog-digital converter.
  • Showcased the platform's compatibility with integrated photoelectric systems.

Conclusions:

  • The developed reprogrammable plasmonic topological insulator enables ultrafast, dynamic control of light propagation.
  • The platform's programmability allows integration of diverse photonic topological functionalities.
  • This versatile platform is compatible with integrated photoelectric systems, advancing optical device development.