Amplitude-squared squeezing in collective resonance fluorescence

Abstract

The amplitude-squared squeezing, defined by Hillery [M. Hillery, Phys. Rev. A 36 (1987) 3796], in collective resonance fluorescence is considered. Contrary to the single-atom case the amplitude-squared squeezing occurs in the mixture of sidebands of the collective fluorescence field. The enhancement of the degree of amplitude-squared squeezing is shown when the number of atoms increases. The influence of the thermal field on the amplitude-squared squeezing is also discussed.