Abstract
Coherent dynamics of electrons in the triple tunnel-coupled quantum wells after an ultrafast optical excitation is studied. In a collisionless approximation, we consider temporal evolution of the electron distribution for different parameters of structure and pulse duration. Due to mixing of the tunneling frequencies under the three-level tunneling resonance condition, transient evolution of the dipole moment demonstrates different kinds of behavior: harmonic oscillations, beats, and nonperiodic oscillations.
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