^{[22]} that extended Lamb theory to account for space dependence. This was the first formulation of the coupled field-matter equations with space dependence (later called "Maxwell-Bloch equations"). It predicted invariant pulses propagating at the light speed (the nonlinearity compensating for dispersion). These results were later applied to absorbing media (self induced transparency).: Introduced a fundamental parameter of the resonant interaction1969^{[41,44]} that is, the correlation length in the cooperative spontaneous emission of atoms prepared incoherently in an excited state. It does not depend on boundary conditions (as the mirrors in a laser), nor on an external field (as in coherent spectroscopy), but it is an intrinsic parameter of many body optical interactions.: Theory of the 1970atomic coherent states^{[48,51,54]} as a basis for a statistical description of coherent phenomena in resonant spectroscopy.: Theory of the 1978two photon optical bistability^{[65]}, observed four years later.: 1998Quantum interferenceof macroscopically distinct states in parametric optical generation^{[262]}.
Dissipative dynamics of an open Bose-Einstein condensate (BEC): pattern formation^{[288,289]}.
Macroscopic quantum coherence in BEC: attractive and repulsive interactions^{[306,307,312]}. |

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