Electric-field-induced quantum coherence of the intersubband transition in semiconductor quantum wells.
An intense coherent laser field couples two electron subbands in quantum wells. Using generalized self-consistent density functional theory, we study the nature of the Coulomb and light-induced electronic renormalization. We show electric-field-induced transparency and light amplification without population inversion of a weak probe beam in such a system. The effects of the pump field strength, electron density, and delta-doping position are investigated.
Y
Y
Zhao
D
D
Huang
C
C
Wu