SQUEEZING IN ANOMALOUS RESONANCE FLUORESCENCE

The squeezing properties of the fluorescence field emitted by a two-le vel atom driven by a coherent laser field in a squeezed vacuum are cal culated. We show that in the region of the anomalous resonance fluores cence the emitted field exhibits squeezing that is much larger than th at in the input squeezed vacuum. The squeezing spectrum attains a mini mum value that corresponds to 75% squeezing. We also find that, in the total fluorescence field, squeezing attains an optimum achievable val ue in the fluorescence field emitted by a two-level atom. The optimum squeezing is associated with the collapse of the system into a pure st ate. (C) 1997 Optical Society of America.