Strong relative intensity squeezing by 4-wave mixing in Rb vapor

Details Strong relative intensity squeezing by 4-wave mixing in Rb vapor Strong relative intensity squeezing by 4-wave mixing in Rb vapor

2006-07-27

arxiv.org/abs/physics/0607254v1

Physics

Optics

Submitted to Optics Letters

Scientific paper

10.1364/OL.32.000178

We have measured -3.5 dB (-8.1 dB corrected for losses) relative intensity squeezing between the probe and conjugate beams generated by stimulated, nondegenerate four-wave mixing in hot rubidium vapor. Unlike early observations of squeezing in atomic vapors based on saturation of a two-level system, our scheme uses a resonant nonlinearity based on ground-state coherences in a three-level system. Since this scheme produces narrowband, squeezed light near an atomic resonance it is of interest for experiments involving cold atoms or atomic ensembles.

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