Spectral features due to dipole-dipole interactions in optical harmonic generation
The dipole-dipole interaction in the quantum mechanical treatment of the matter-radiation dynamics, is shown to give rise to split energy levels reminiscent of the nonlinear coupled spectral features, as well as a self-sustained coherent modes. Wiener's theory of nonlinear random processes is applied to the second harmonic generation (SHG), leading also to coupled spectral pulling and dipping features, due to the dual noise sources in the fundamental and the harmonic polarizations. Furthermore, the nonlinear spectral features are suggested to be applied to implement quantum (qubit) gates for computation.
dipole-dipole interaction split energy levels second harmonic generation (shg) nonlinear spectral features quantum mechanical matter-radiation dynamics quantum gates