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Related Experiment Video

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Strong coupling in metal-semiconductor microcavities featuring Ge quantum wells: a perspective study.

Marco Faverzani¹, Stefano Calcaterra¹, Paolo Biagioni¹

¹Politecnico di Milano, Milano, Italy.

Nanophotonics (Berlin, Germany)

|December 5, 2024

Summary

Strong coupling of light and matter is achievable in group-IV semiconductor materials. This study demonstrates its feasibility in Germanium/Silicon-Germanium quantum wells using hybrid microcavities.

Keywords:

germanium quantum wells strong coupling

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Published on: July 17, 2020

Area of Science:

Materials Science
Quantum Optics
Solid-State Physics

Background:

Strong coupling is a fundamental quantum phenomenon where light and matter interact intensely.
Group-IV semiconductors offer a promising platform for optoelectronic applications due to their unique properties.

Purpose of the Study:

To theoretically investigate the observation of strong coupling at mid-infrared frequencies.
To explore the potential of group-IV semiconductor materials, specifically Germanium/Silicon-Germanium (Ge/SiGe) quantum wells, for achieving strong coupling.

Main Methods:

Theoretical investigation of light-matter interaction.
Modeling of hybrid metal-semiconductor microcavities incorporating Ge/SiGe quantum wells.
Analysis of the conditions required for strong coupling at mid-infrared frequencies.

Main Results:

The study confirms that the strong coupling condition is attainable in Ge/SiGe quantum wells.
Integration within hybrid metal-semiconductor microcavities, utilizing a highly n-doped SiGe layer as a mirror, facilitates strong coupling.
Mid-infrared frequencies are identified as suitable for observing this phenomenon in the proposed system.

Conclusions:

Strong coupling is theoretically achievable in group-IV semiconductor systems at mid-infrared frequencies.
Ge/SiGe quantum wells within specifically designed hybrid microcavities represent a viable platform for exploring strong coupling effects.
This research paves the way for novel optoelectronic devices based on strong light-matter interactions in group-IV materials.