Autoresonant control of the many-electron dynamics in nonparabolic quantum wells

Giovanni Manfredi (1, 2) , Paul-Antoine Hervieux (1, 2)

1 IPCMS - Institut de Physique et Chimie des Matériaux de Strasbourg
2 CALVI - Scientific computation and visualization

The optical response of nonparabolic quantum wells is dominated by a strong peak at the plasmon frequency. When the electrons reach the anharmonic regions, resonant absorption becomes inefficient. This limitation is overcome by using a chirped laser pulse in the autoresonant regime. By direct simulations using the Wigner phase-space approach, the authors prove that, with a sequence of just a few pulses, electrons can be efficiently detrapped from a nonparabolic well. For an array of multiple quantum wells, they can create and control an electronic current by suitably applying an autoresonant laser pulse and a slowly varying dc electric field.

Domaines: Physique [physics]

Giovanni Manfredi, Paul-Antoine Hervieux. Autoresonant control of the many-electron dynamics in nonparabolic quantum wells. Applied Physics Letters, 2007, 91 (6), pp.061108-3. ⟨10.1063/1.2761246⟩. ⟨hal-00212208⟩