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Related Concept Videos

Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)01:20

Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)

Two NMR-active nuclei bonded to a central atom can be involved in geminal or two-bond coupling. Geminal coupling is commonly seen between diastereotopic protons in chiral molecules and unsymmetrical alkenes, among others.
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Induced Electric Dipoles01:28

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A permanent electric dipole orients itself along an external electric field. This rotation can be quantified by defining the potential energy because the external torque does work in rotating it. Then, the potential energy is minimum at the parallel configuration and maximum at the antiparallel configuration. While the former is a stable equilibrium, the latter is an unstable equilibrium.
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Fermi Level Dynamics01:12

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Related Experiment Video

Updated: Jun 14, 2026

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
12:57

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

Published on: October 13, 2017

Fano-Kondo interplay in a side-coupled double quantum dot.

S Sasaki1, H Tamura, T Akazaki

  • 1NTT Basic Research Laboratories, NTT Corporation, Atsugi, Kanagawa 243-0198, Japan. satoshi@nttbrl.jp

Physical Review Letters
|April 7, 2010
PubMed
Summary

We observed Fano resonances in a double quantum dot system, showing a competition between Fano interference and the Kondo effect. This interference partially suppresses the Kondo resonance, revealing new physics in quantum transport.

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Related Experiment Videos

Last Updated: Jun 14, 2026

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
12:57

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

Published on: October 13, 2017

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots
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Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

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Area of Science:

  • Quantum physics
  • Condensed matter physics
  • Mesoscopic physics

Background:

  • Investigating electron transport in coupled quantum dots is crucial for understanding quantum phenomena.
  • The Kondo effect and Fano resonances are key features in quantum dot transport.

Purpose of the Study:

  • To explore the low-temperature transport characteristics of a side-coupled double quantum dot system.
  • To analyze the interplay between Fano resonances and the Kondo effect.

Main Methods:

  • Experimental investigation of a side-coupled double quantum dot with one dot connected to leads.
  • Theoretical modeling using the tight-binding model and slave boson mean field approximation.

Main Results:

  • Observation of Fano resonances resulting from interference between dot levels and Kondo/cotunneling continuum.
  • Demonstration of Kondo resonance suppression due to destructive Fano interference.
  • Qualitative agreement between experimental findings and theoretical calculations.

Conclusions:

  • The study reveals a novel Fano-Kondo competition in quantum dot systems.
  • The findings provide insights into the complex interference phenomena governing quantum transport.