Dynamics Of A Coherently Driven Nondegenerate Three-level Atom

In this thesis we study the statistical and squeezing properties of the lightrnemitted by a nondegenerate three-level atom driven by coherent light and in arncavity coupled to a vacuum reservior via a single-port mirror. We carry out ourrnanalysis by putting the noise operators associated with the vacuum reservior inrnnormal order and applying the large-time approximation.rnIt is found that the mean of the two cavity modes are equal. In addition,rnthe photon number statistics is Poissonian for < 0:13 and sub-Poissonian forrn 0:13. Our result shows that the photon numbers of modes a and b arernuncorrelated. We have also calculated the quadrature variance for the separaternmodes and for the superposition of the two modes. It turns out that mode a is inrna chaotic state for arbitrary values of rnc and rn but mode b is in chaotic state forrnrnc > rn and the superposed cavity modes arernin a squeezed state. Furthermore, we have determined the quadrature squeezingrnof the superposed cavity modes. The maximum quadrature squeezing is found tornbe 43% below the coherent-state level

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