Normal Amplitude Squeezing Effects and Poissonian Photon Statistics During Seven-Wave Mixing Process

The present paper deals with the investigation of the generation of squeezed states quantum mechanically in spontaneous seven-wave mixing process under short time approximation theoretically. The process involves the absorption of two pump photons of same frequency ω ₁ and a single photon of different frequency ω ₂ which cause subsequent emission of four probe photons of the same frequencyω ₃. During interaction it has been found that squeezing occurs at frequency ω ₂ which depends upon coupling constant g and phase ofthe field amplitude. The statistical behaviour of photons in the mode has also been studied and found it to be poissionian in nature. The signal to noise ratio is also studied during the process.