In the present chapter we shall study resonance fluorescence from a two-level atom. It represents a classic problem in quantum optics as many of the quantum mechanical features we have discussed, for example, photon antibunching and squeezing are present in this system. This problem was considered as early as the 1930’s by E. Wigner and V. Weisskopf who treat the light scattering by perturbation techniques, including only elastic scattering. With the advent of the laser, higher incident intensities were possible, which gave rise to nonlinear interactions and inelastic scattering.
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- 11.6F.M. Rateike, G. Leuchs, H. Walther: See results in J.D. Cresser, J. Häger, G. Leuchs, F.M. Rateike and H. Walther in Dissipative Systems in Quantum Optics, edited by R. Bonifacio, Springer 1982Google Scholar