Fast and selective phonon-assisted state preparation of a quantum dot by adiabatic undressing

@article{Barth2016FastAS,
  title={Fast and selective phonon-assisted state preparation of a quantum dot by adiabatic undressing},
  author={Andreas M. Barth and Sebastian Luker and Alexei Vagov and Doris E. Reiter and Tilmann Kuhn and Vollrath Martin Axt},
  journal={Physical Review B},
  year={2016},
  volume={94}
}
We investigate theoretically the temporal behavior of a quantum dot under off-resonant optical excitation targeted at fast acoustic phonon-assisted state preparation. We demonstrate that in a preparation process driven by short laser pulses three processes can be identified: a dressing of the states during the switch on of the laser pulse, a subsequent phonon-induced relaxation and an undressing at the end of the pulse. By analyzing excitation scenarios with different pulse shapes we highlight… 

Figures from this paper

Phonon-assisted dark exciton preparation in a quantum dot
In semiconductor quantum dots the coupling to the environment, i.e. to phonons, plays a crucial role for optical state preparation. We analyze the phonon impact on two methods for a direct optical
Dynamic vibronic coupling in InGaAs quantum dots [Invited]
The electron–phonon coupling in self-assembled InGaAs quantum dots is relatively weak at low light intensities, which means that the zero-phonon line in emission is strong compared to the phonon
On-demand generation of higher-order Fock states in quantum-dot–cavity systems
The on-demand preparation of higher-order Fock states is of fundamental importance in quantum information sciences. We propose and compare different protocols to generate higher-order Fock states in
Emission-Frequency Separated High Quality Single-Photon Sources Enabled by Phonons.
We demonstrate theoretically that the single-photon purity of photons emitted from a quantum dot exciton prepared by phonon-assisted off-resonant excitation can be significantly higher in a wide
Optical Signals to Monitor the Dynamics of Phonon‐Modified Rabi Oscillations in a Quantum Dot
Semiconductor quantum dots are solid state few‐level systems which can interact strongly with light. As such, they can be used as a single photon source or to perform solid‐state quantum‐optics
Biexciton initialization by two-photon excitation in site-controlled quantum dots: The complexity of the antibinding state case
In this work, we present a biexciton state population in (111)B oriented site-controlled InGaAs quantum dots (QDs) by resonant two photon excitation. We show that the excited state recombines
SUPER Scheme in Action: Experimental Demonstration of Red-Detuned Excitation of a Quantum Emitter.
The quest for the perfect single-photon source includes finding the optimal protocol for exciting the quantum emitter. Coherent optical excitation was, up until now, achieved by tuning the laser
Distinctive characteristics of carrier-phonon interactions in optically driven semiconductor quantum dots
ABSTRACT We review distinct features arising from the unique nature of the carrier-phonon coupling in self-assembled semiconductor quantum dots. Because of the discrete electronic energy structure,
Efficient Source of Indistinguishable Single-Photons based on Phonon-Assisted Excitation
Semiconductor quantum dots in cavities are high-performance single-photon sources. Thus far the most efficient sources utilise resonant excitation of an unpolarized quantum emitter coupled to a
Unidirectional quantum transport in optically driven V -type quantum dot chains
We predict a mechanism for achieving complete population inversion in a continuously driven InAs/GaAs semiconductor quantum dot featuring $V$-type transitions. This highly nonequilibrium steady state
...
...