STOCHASTIC RESONANCE IN A SINGLE-MODELASER DRIVEN BY QUADRATIC COLORED PUMPNOISE AND QUANTUM NOISE WITHCROSS-CORRELATION BETWEEN REAL ANDIMAGINARY PARTS OF NOISE

摘要

and quantum noise with cross-correlation between real and imaginary parts of noiseproposed in International Journal of Modern Physics B 20, 5383 (2006) and Phys. Rev.E 73, 023802 (2006), the stochastic resonance (SR) of laser intensity is investigated byvirtue of the linearized approximation. The analytic expression of signal-to-noise ratio(SNR) is calculated. It is found that the phenomena of stochastic resonance respectivelyexist in the curves of the SNR versus the noise cross-correlation coefficient λ_p and theSNR versus the pump parameter a, as well as the SNR versus the signal frequency ωfor the model. It is shown that there are three different types of SR in the model: theconventional form of SR, the SR in the broad sense and the bona fide SR.