• Dr. JAWAHAR LAL

The present paper investigates the quantum squeezing in the fundamental mode in spontaneous and stimulated processes during ten wave mixing up to second order Hamiltonian interaction under a short time approximation based on a fully quantum mechanical approach theoretically. The coupled Heisenberg equations of motion involving real and imaginary parts of field quadrature operator are established. The process involves the absorption of five photons of frequency ω1 and emission of four photons of same frequency ω2 and one photon of frequency ω3.The occurrence of amplitude and amplitude- squared squeezing in one of the quadrature of the field amplitude during spontaneous and stimulated interactions are found to be dependent on the selective phase values of the field amplitude of fundamental mode. The degree of squeezing and signal to noise ratio (SNR) is found to be higher in stimulated interaction than during spontaneous process. The photons statistics in the fundamental mode has also been studied and found to be Sub-Poissonian in nature. Comparisons of results for spontaneous and stimulated interactions are represented graphically.

Quantum Squeezing, Poissonian Statistics, Wave Mixing

"NORMAL AND HIGHER ORDER QUANTUM SQUEEZING AND SNR IN SPONTANEOUS AND STIMULATED INTERACTIONS DURING TEN WAVE MIXING PROCESS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.619-626, May-2019, Available :http://www.jetir.org/papers/JETIR1905O99.pdf

"NORMAL AND HIGHER ORDER QUANTUM SQUEEZING AND SNR IN SPONTANEOUS AND STIMULATED INTERACTIONS DURING TEN WAVE MIXING PROCESS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp619-626, May-2019, Available at : http://www.jetir.org/papers/JETIR1905O99.pdf