4 research outputs found
Inducing electron spin coherence in GaAs quantum well waveguides: Spin coherence without spin precession
Electron spin coherence is induced via light-hole transitions in a quantum
well waveguide without either an external or internal DC magnetic field. In the
absence of spin precession, the induced spin coherence is detected through
effects of quantum interference in the spectral domain coherent nonlinear
optical response. We interpret the experimental results qualitatively using a
simple few-level model with only the optical transition selection rule as its
basic ingredients