Chirped laser excitation of quantum dot excitons coupled to a phonon bath

Motivated by recent experimental results, we present a detailed account of adiabatic population transfer in InGaAs/GaAs quantum dots by strong chirped laser pulses. Specifically, numerical simulations in very good agreement with experimental results allow for a clear physical picture of this process...

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Bibliographic Details
Published in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2012-10, Vol.86 (16), Article 161304
Main Authors: Debnath, A., Meier, C., Chatel, B., Amand, T.
Format: Article
Language:English
Subjects:
Adiabatic flow
Computer simulation
Condensed matter
Lasers
Mathematical analysis
Mathematical models
Optimization
Phonons
Physics
Qunatum dots
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Summary:Motivated by recent experimental results, we present a detailed account of adiabatic population transfer in InGaAs/GaAs quantum dots by strong chirped laser pulses. Specifically, numerical simulations in very good agreement with experimental results allow for a clear physical picture of this process. An analytical expression is developed, which is used to analyze the strong-field adiabatic population transfer in the presence of the phonon environment. Optimal pulse parameters to achieve robust population transfer at temperatures as high as 80 K are identified and are confirmed by numerical simulations.
ISSN:1098-0121
1550-235X
DOI:10.1103/PhysRevB.86.161304