# Electron-phonon dynamics in optically excited quantum dots: Exact solution for multiple ultrashort laser pulses

@article{Vagov2002ElectronphononDI, title={Electron-phonon dynamics in optically excited quantum dots: Exact solution for multiple ultrashort laser pulses}, author={Alexei Vagov and Vollrath Martin Axt and Tilmann Kuhn}, journal={Physical Review B}, year={2002}, volume={66}, pages={165312} }

A model of semiconductor quantum dots coupled to phonons and laser light, which is relevant in the limit of strong electronic confinement, is investigated. For an arbitrary sequence of excitations by ultrafast pulses, analytical solutions are obtained for all pertinent density-matrix elements. The results are nonperturbative with respect to the coupling to both phonons and laser light. The derivation depends neither on a particular choice of electronic wave functions nor on a particular wave…

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## References

SHOWING 1-10 OF 43 REFERENCES

### Coherent control of phonon quantum beats

- Physics
- 1999

Abstract The coherent control of excitons coupled to longitudinal optical phonons is analyzed in the quantum kinetic regime. Different models allowing for different levels of sophistication in the…

### Electron-phonon interaction in quantum dots: A solvable model

- Physics
- 2000

The relaxation of electrons in quantum dots via phonon emission is hindered by the discrete nature of the dot levels (``phonon bottleneck''). In order to clarify the issue theoretically we consider a…

### Theory of pure dephasing and the resulting absorption line shape in semiconductor quantum dots

- Physics
- 2002

The pure dephasing of the optical polarization and the corresponding line shape of absorption spectra in small quantum dots due to the interaction of the exciton both with optical and acoustic…

### Strong Electron-Phonon Coupling Regime in Quantum Dots: Evidence for Everlasting Resonant Polarons

- Physics
- 1999

Using far-infrared magnetospectroscopy in self-assembled InAs quantum dots, we have investigated the electronic transitions from the ground s levels to the excited p levels. The experiments consist…

### Interaction Induced Electron Self-Interference in a Semiconductor: The Phonon Staircase Effect

- Physics
- 1997

The exact quantum mechanics of a model semiconductor system of an electron with a discrete and equidistant energy spectrum interacting with a single phonon mode is presented. An electron initially…

### Acoustic Phonon Emission by Optically Excited Carriers in the InAs/GaAs Quantum Dot System

- Physics
- 2001

The phonons emitted by photoexcited carriers in self-organised InAs quantum dots in GaAs have been studied using a time-resolved bolometric detection technique. Measurements of the temporal,…

### Rabi oscillations of excitons in single quantum dots.

- PhysicsPhysical review letters
- 2001

The measurement extends the artificial atom model of quantum dot excitonic transitions into the strong-field limit, and makes possible full coherent optical control of the quantum state of single excitons using optical pi pulses.

### Coupled quantum dots as quantum gates

- Physics
- 1999

We consider a quantum-gate mechanism based on electron spins in coupled semiconductor quantum dots. Such gates provide a general source of spin entanglement and can be used for quantum computers. We…