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Bloch oscillations. Coherent control of wave packet dynamics in superlattices

Blochoszillationen. Kohärente Kontrolle der Wellenpaket-Dynamik in Übergittern
 

Scheffler, M.; Zimmermann, R.:
23rd International Conference on the Physics of Semiconductors 1996. Vol. 3
Singapore: World Scientific, 1996
ISBN: 981-02-2777-9
pp.1763-1770 : Ill.
International Conference on the Physics of Semiconductors <23, 1996, Berlin>
English
Conference Paper
Fraunhofer IAF ()
heterostructure; Heterostruktur; III-V Halbleiter; III-V semiconductors; time resolved measurement; zeitaufgelöste Messung

Abstract
Bloch oscillations in semiconductor superlattices have recently been observed using optical techniques. The main point which makes these quantum beats of the Wannier-Stark ladder to Bloch oscillations is a true spatial oscillation of the wave packet. We present a novel technique which measures the spatial amplitude directly: The macroscopic dipole field of the wave packet is detected by small shifts of the Wannier-Stark ladder peaks. The observed signals are in good agreement with theoretical estimates.

: http://publica.fraunhofer.de/documents/PX-6840.html