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Bloch oscillations, Zener tunneling and Wannier-Stark ladders in the time-domain

J. Rotvig·A. P. Jauho·H. Smith
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Abstract

We present a time-domain analysis of carrier dynamics in a semiconductor superlattice with two minibands. Integration of the density-matrix equations of motion reveals a number of new features: (i) for certain values of the applied static electric field strong interband transitions occur; (ii) in static fields the complex time-dependence of the density-matrix displays a sequence of stable plateaus in the low field regime, and (iii) for applied fields with a periodic time-dependence the dynamic response can be understood in terms of the quasienergy spectra.

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J. Rotvig, A. P. Jauho, H. Smith. 1994-10-31. Bloch oscillations, Zener tunneling and Wannier-Stark ladders in the time-domain. https://doi.org/10.1103/physrevlett.74.1831

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