Theory of a two-photon squeezed laserlike oscillator

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Abstract
It is theoretically shown how a two-photon laserlike oscillator with strongly squeezed output can be constructed. The physical mechanism leading to squeezed laserlike oscillator is the strong competition among the nonlinear gain due to resonant four-wave mixing process, nonlinear losses due to the absorption of generated photons, and linear losses from the cavity. In the balanced case, the photon correlations result in a linewidth that is narrower than the Schawlow-Townes limit.