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Updated: May 8, 2026
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Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
Published on: October 13, 2017
Anticorrelation for conductance fluctuations in chaotic quantum dots
A L R Barbosa1, M S Hussein, J G G S Ramos
1Departamento de Física, Universidade Federal Rural de Pernambuco, Dois Irmãos, 52171-900 Recife, Pernambuco, Brazil.
Summary
We studied electronic transport in chaotic quantum dots, finding that tunnel barriers affect conductance fluctuations. These fluctuations can be depleted or amplified, and even show anticorrelation in some cases.
Area of Science:
- Mesoscopic electronic transport
- Quantum chaos
- Condensed matter physics
Background:
- Understanding electron transport in quantum dots is crucial for developing quantum devices.
- The behavior of conductance fluctuations in chaotic systems is complex and depends on various parameters.
Purpose of the Study:
- To investigate correlation functions of mesoscopic electronic transport in open chaotic quantum dots.
- To analyze the influence of finite tunnel barriers and their crossover between Wigner-Dyson ensembles on conductance fluctuations.
Main Methods:
- Utilizing an analytical stub formalism to model the system.
- Examining parametric variations of electron energy and magnetoconductance fields.
Main Results:
- Demonstrated the emergence of depletion and amplification of conductance fluctuations based on tunnel barrier strength.
- Showed that correlation functions of conductance fluctuations can exhibit anticorrelation, even in pure Dyson ensembles.
Conclusions:
- Finite tunnel barriers play a significant role in modulating conductance fluctuations in chaotic quantum dots.
- The findings provide theoretical insights with potential experimental validation in mesoscopic transport studies.
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