Generating sequences of phonon wave packets by optical excitation of a quantum dot

Titelangaben

Reiter, Doris ; Wigger, Daniel ; Lüker, Sebastian ; Axt, Vollrath Martin ; Machnikowski, Paweł ; Kuhn, Tilmann:
Generating sequences of phonon wave packets by optical excitation of a quantum dot.
In: Journal of Physics: Conference Series. Bd. 647 (2015) . - 012025.
ISSN 1742-6596
DOI: https://doi.org/10.1088/1742-6596/647/1/012025

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Abstract

Phonons can play an active role in controlling solid state systems or in the transport of energy and information. Thus, it is vital to understand generation processes and properties of phonons. By optical excitation of a semiconductor quantum dot, a sequence of phonon wave packets can be created. In this paper we focus on the fluctuation properties of lattice displacement and momentum of these phonon wave packets. For detuned excitation the fluctuations may fall below their respective vacuum values and squeezing occurs.