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Phase-Coherent Dynamics of Quantum Devices with Local Interactions
Michele Filippone1, Arthur Marguerite2, Karyn Le Hur3
1Department of Quantum Matter Physics, University of Geneva 24 Quai Ernest-Ansermet, CH-1211 Geneva, Switzerland.
Entropy (Basel, Switzerland)
|December 8, 2020
Summary
Local Fermi Liquid (LFL) theories explain quantum dot dynamics. New insights reveal inelastic effects crucial for electron emission, impacting mesoscopic capacitor experiments.
Area of Science:
- Condensed Matter Physics
- Quantum Computing
- Mesoscopic Physics
Background:
- Quantum dot devices exhibit complex low-energy dynamics due to strong electron correlations.
- Local Fermi Liquid (LFL) theories provide a framework for understanding these coherent behaviors.
- Mesoscopic capacitors are key systems for probing quantum phenomena like Coulomb-induced state transfer.
Purpose of the Study:
- To review the application of Local Fermi Liquid theories in quantum dot devices.
- To extend the understanding of LFL theories to out-of-equilibrium dynamics.
- To investigate the role of inelastic effects in single electron emission and mesoscopic capacitor behavior.
Main Methods:
- Utilizing effective elastic scattering theory to model strongly correlated systems.
- Analyzing experimental data from mesoscopic capacitors, including Coulomb-induced quantum state transfer.
- Developing theoretical approaches beyond LFLs to incorporate inelastic effects.
Main Results:
- LFL theories successfully describe the equilibrium dynamics of quantum dots.
- Inelastic effects are shown to be critical for triggered single electron emission.
- New analysis of past experimental data reveals significant interaction effects in mesoscopic capacitors.
Conclusions:
- LFL theories offer valuable insights into quantum dot low-energy physics.
- Extended theoretical frameworks are necessary to capture out-of-equilibrium dynamics and inelastic scattering.
- Understanding interaction effects is crucial for advancing quantum information processing with quantum dots.
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