Uw. Rathe et al., BROAD-BAND PHASE-NOISE SQUEEZING OF TRAVELING WAVES IN ELECTROMAGNETICALLY INDUCED TRANSPARENCY, Physical review. A, 54(4), 1996, pp. 3691-3694
We show that driven Lambda-type atoms in a cell under conditions of el
ectromagnetically induced transparency squeeze the phase noise of a tr
aveling-wave input field in a broad spectral region. The maximum squee
zing is about 41% below the shot-noise level.