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Updated: Apr 22, 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

Orbital Kondo effect in a parallel double quantum dot.

Zhi-qiang Bao¹, Ai-Min Guo, Qing-feng Sun

¹Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.

Journal of Physics. Condensed Matter : an Institute of Physics Journal

|October 10, 2014

Summary

This summary is machine-generated.

This study models the orbital Kondo effect in double quantum dots (DQDs). Theoretical results match experiments, showing Kondo peaks depend on pseudospin resolution and interdot tunneling in DQDs.

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Area of Science:

Quantum Condensed Matter Physics
Mesoscopic Physics
Quantum Transport

Background:

The orbital Kondo effect in double quantum dots (DQDs) is a key phenomenon in quantum transport.
Recent experiments have provided pseudospin-resolved transport spectroscopy data for the orbital Kondo effect in DQDs.

Purpose of the Study:

To develop a theoretical model for the orbital Kondo effect in a parallel DQD system.
To reproduce and interpret experimental findings on Kondo peak behavior in DQDs.
To explore the impact of interdot tunneling and varying lead voltages on Kondo peak characteristics.

Main Methods:

Construction of a theoretical model for orbital Kondo effect in parallel DQDs.
Analysis of conductance-bias curves under different pseudospin resolution conditions.
Investigation of the influence of interdot tunneling and lead voltage configurations.

Main Results:

Theoretical model successfully reproduces experimental observation of one or two Kondo peaks based on pseudospin resolution.
Identified up to four Kondo peaks in the complete pseudospin-resolved case (non-equal lead voltages).
Demonstrated emergence of new Kondo peaks and dips when interdot tunneling is considered.

Conclusions:

The theoretical model provides a robust framework for understanding the orbital Kondo effect in DQDs.
Pseudospin resolution and interdot tunneling significantly influence the Kondo peak structure.
Pseudospin transport in DQDs offers a controllable platform for studying spin-related phenomena.