Julio Gea-Banacloche

TL;DR: A theory of electromagnetically induced transparency in a three-level, ladder-type Doppler-broadened medium is developed, paying special attention to the case where the coupling and probe beams are counterpropagating and have similar frequencies, so as to reduce the total Dopplers width of the two-photon process.

TL;DR: A review of active and passive ring laser devices is given in this paper, with special emphasis given to the problems associated with the achievement of greater sensitivity and stability with respect to the ring laser gyroscope.

TL;DR: The dispersive properties of the atomic transition in the rubidium line are measured and this ladder-type system is observed to exhibit electromagnetically induced transparency together with a rapidly varying refractive index.

TL;DR: The evolution of the atomic state in the resonant Jaynes-Cummings model (a two-level atom interacting with a single mode of the quantized radiation field) with the field initially in a coherent state is considered and it is shown that the atom is to a good approximation in a pure state in a middle of what has been traditionally called the "collapse region".

TL;DR: The revivals of the population inversion are seen to be entirely due to the fact that the linear superposition of the two macroscopically distinct field states is coherent (i.e., a pure state), as opposed to an incoherent mixture.