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Updated: Jun 19, 2026

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

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Published on: October 13, 2017

Resonant pair tunneling in double quantum dots.

Eran Sela¹, Ian Affleck

¹Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, Canada, V6T 1Z1.

Physical Review Letters

|October 2, 2009

Summary

We studied current fluctuations in two quantum dots, revealing resonant tunneling of charge 2e carriers. This occurs during a crossover from non-Fermi liquid to Fermi liquid behavior in the two-impurity Kondo model.

Area of Science:

Quantum physics
Condensed matter physics
Mesoscopic physics

Background:

The two-impurity Kondo model describes complex electronic interactions in quantum systems.
Understanding non-Fermi liquid to Fermi liquid crossovers is crucial for quantum electronics.

Purpose of the Study:

To present exact results on nonequilibrium current fluctuations in a series of two quantum dots.
To analyze the crossover between non-Fermi liquid and Fermi liquid behaviors.

Main Methods:

Utilizing the two-impurity Kondo model to describe the system.
Developing and applying a Fermi liquid approach for analysis.

Main Results:

Exact results for current fluctuations were obtained throughout the crossover.

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Published on: October 13, 2017

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

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High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

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Resonant tunneling of charge 2e carriers was identified at critical interimpurity coupling.

The Fermi liquid approach successfully explains low-energy scale phenomena.

Conclusions:

The study provides a comprehensive understanding of quantum transport in interacting quantum dot systems.
The developed Fermi liquid theory offers a framework for studying similar experimental setups.