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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

Published on: July 21, 2018

Active quantum plasmonics.

Dana Codruta Marinica¹, Mario Zapata², Peter Nordlander³

¹Institut des Sciences Moléculaires d'Orsay, UMR 8214, CNRS, Université Paris Sud, Bâtiment 351, 91405 Orsay Cedex, France.

Science Advances

|January 30, 2016

Summary

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This summary is machine-generated.

Researchers propose a new method for controlling light using quantum effects in nanoscale gaps. Applying an external bias tunes plasmonic resonances, enabling faster and more efficient optoelectronic devices.

Area of Science:

Plasmonics and Nanophotonics
Quantum Optics
Condensed Matter Physics

Background:

Localized surface plasmons enable light manipulation at the nanoscale.
Active control of plasmon excitations is crucial for advanced optoelectronics.
Existing methods for plasmon control face limitations in speed and efficiency.

Purpose of the Study:

To propose and demonstrate a mechanism for fast and active control of optical responses in metallic nanostructures.
To exploit quantum effects in subnanometric plasmonic gaps for tunable plasmon resonances.
To establish a new platform for electrical manipulation of light in optoelectronic applications.

Main Methods:

Utilizing quantum effects in subnanometric plasmonic gaps.
Applying an external DC bias across the nanostructure gap.

Keywords:

Physics Plasmonics Quantum plasmonics applied optoelectronics

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Employing time-dependent density functional theory (TD-DFT) calculations to validate the concept.

Main Results:

Demonstrated a substantial, reversible change in tunneling conductance at optical frequencies via applied bias.
Showcased modification of plasmonic resonances by electrical tuning of quantum tunneling.
Validated the feasibility of the proposed mechanism through rigorous theoretical calculations.

Conclusions:

The proposed mechanism offers fast, reversible, and versatile active control of plasmon excitations.
Metal nanoparticle plasmonics can significantly benefit from this bias-controlled quantum approach.
This electrical light manipulation via quantum plasmonics opens new avenues for optoelectronic device development.