Influence of acoustic phonons on the optical control of quantum dots driven by adiabatic rapid passage

Titelangaben

Lüker, Sebastian ; Gawarecki, Krzysztof ; Reiter, Doris ; Grodecka-Grad, Anna ; Axt, Vollrath Martin ; Machnikowski, Paweł ; Kuhn, Tilmann:
Influence of acoustic phonons on the optical control of quantum dots driven by adiabatic rapid passage.
In: Physical Review B. Bd. 85 (2012) Heft 12 . - 121302(R).
ISSN 0163-1829
DOI: https://doi.org/10.1103/PhysRevB.85.121302

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Abstract

The role of phonons for adiabatic rapid passage in semiconductor quantum dots is studied theoretically. While in an ideal system adiabatic rapid passage results in a full inversion of the quantum dot occupation, phonons hamper this behavior drastically. We show that the transitions between the adiabatic states lead to a temperature-dependent decrease of the final exciton occupation. In contrast to the ideal evolution, the phonon-related perturbation induces dependencies on the pulse power and on the sign of the chirp.