Optical blocking of electron tunneling into a single self-assembled quantum dot

Abstract

Time-resolved resonance fluorescence (RF) is used to analyse electron tunneling between a single self-assembled quantum dot (QD) and an electron reservoir. In equilibrium, the RF intensity reflects the average electron occupation of the QD and exhibits a gate voltage dependence that is given by the Fermi distribution in the reservoir. In the time-resolved signal, however, we find that the relaxation rate for electron tunneling is independent of the occupation in the charge reservoir. Using a master equation approach which includes both the electron tunneling and the optical excitation/recombination, we are able to explain the experimental data by optical blocking, i. e. a reduced electron tunneling rate when the QD is occupied by an exciton.

References in corpus (9)

• Single-shot read-out of an individual electron spin in a quantum dot
• Resonance fluorescence from a coherently driven semiconductor quantum dot in a cavity
• Single-shot readout of electron spin states in a quantum dot using spin-dependent tunnel rates
• Sub-Natural Linewidth Single Photons from a Quantum Dot
• Counting statistics and super-Poissonian noise in a quantum dot
• Auger recombination in self-assembled quantum dots: Quenching and broadening of the charged exciton transition
• Bimodal Counting Statistics in Single Electron Tunneling through a Quantum Dot
• Contrast in transmission spectroscopy of a single quantum dot
• Asymmetry of charge relaxation times in quantum dots: The influence of degeneracy

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• Pushing the limits in real-time measurements of quantum dynamics
• Real-time detection of every Auger recombination in a self-assembled quantum dot
• Photoelectron generation and capture in the resonance fluorescence of a quantum dot
• Inverse counting statistics based on generalized factorial cumulants
• Quantum Zeno Manipulation of Quantum Dots
• Phonon spectral density in a GaAs/AlGaAs double quantum dot
• Violation of detailed balance for charge-transfer statistics in Coulomb-blockade systems
• Unraveling spin dynamics from charge fluctuations
• Internal Photo Effect from a Single Quantum Emitter
• Resonance fluorescence revival in a voltage-controlled semiconductor quantum dot
• Photon noise suppression by a built-in feedback loop
• Quantum stochastic resonance in a single-photon emitter