Time scales in the dynamics of an interacting quantum dot

2011/11/30 by L. Debora Contreras-Pulido, L. D. Contreras-Pulido, Janine Splettstoesser +4 · 63 citations
Computer Science · Physics and Astronomy · #Charge (physics) #Coulomb #Dynamics (music) #Electron #Exponential decay #Physics #Position (finance) #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum dot #Quantum mechanics #Relaxation (psychology) #Scale (ratio) #Semiconductor Quantum Structures and Devices #Statistical physics #Time evolution #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.85.075301

published in Physical Review B 85(7) (American Physical Society) · Version accpeted in PRB

openalex publication_date 2012/02/02 · arxiv created 2012/02/28 · arxiv updated 2015/06/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We analyze the dynamics of a single-level quantum dot with Coulomb interaction, weakly tunnel coupled to an electronic reservoir, after it has been brought out of equilibrium, e.g., by a step-pulse potential. We investigate the exponential decay toward the equilibrium state, which is governed by three time scales. In addition to the charge and spin relaxation time there is a third time scale which is independent of the level position and the Coulomb interaction. This time scale emerges in the time evolution of physical quantities sensitive to two-particle processes.

Citations

• Quantum detection of electronic flying qubits in the integer quantum Hall regime
• Current correlations of an on-demand single-electron emitter
• Optimal Spin-Entangled Electron-Hole Pair Pump
• Dynamic response of a mesoscopic capacitor in the presence of strong electron interactions
• Delayed currents and interaction effects in mesoscopic capacitors
• Non-equilibrium current and relaxation dynamics of a charge-fluctuating quantum dot
• Charge transport through single molecules, quantum dots and quantum wires
• Proposal for nonlocal electron-hole turnstile in the quantum Hall regime
• Robust single-parameter quantized charge pumping
• Two-Particle Aharonov-Bohm Effect and Entanglement in the Electronic Hanbury Brown–Twiss Setup

Cited by

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• Transient dynamics and steady state behavior of the Anderson–Holstein model with a superconducting lead
• Phase-Coherent Dynamics of Quantum Devices with Local Interactions
• Qubit quantum-dot sensors: Noise cancellation by coherent backaction, initial slips, and elliptical precession
• Coulomb-blockade effect in nonlinear mesoscopic capacitors