A two-level density matrix description of resonance light scattering

摘要: Abstract By the use of quantum regression theorem two-time dipole correlation function is calculated for a system characterized by well-known phenomenological two-level density matrix. Calculation scattered light spectrum in weak signal limit yields lineshape containing sharp component following exciting frequency and also broad dephasing width. When no present result same as isolated molecule result. The calculations indicate that fluorescence type emission due to presence ensemble correlations which are important oly if field real processes occur. relationship between these results semiclassical discussed.