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International Journal of Modern Physics B

INTENSITY DEPENDENT COUPLING HAMILTONIAN VIA MULTI-PHOTON INTERACTION IN A KERR MEDIUM

R. A. Zait

Published Dec 10, 2003• 6 citations
Publisher

Abstract

We study the dynamics and quantum characteristics of a single two-level atom interacting with a single mode cavity field undergoing a multi-photon processes in the presence of a nonlinear Kerr-like medium. The wavefunctions of the multi-photon system are obtained when the atom starts in the excited and in the ground state. The atomic inversion, the squeezing of the radiation field and the quasiprobability distribution Q-function of the field are discussed. Numerical results for these characteristics are presented when the atom starts in the excited state and the field mode in a coherent state. The influence of the presence and absence of the number operator and the Kerr medium for the one- and two-photon processes on the evolution of these characteristics are analyzed.

DOI
10.1142/s0217979203023392

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We study the interaction of a four level-atom with a single mode in a cavity, involving intensity dependent coupling with additional a kirr-like medium. The wave function is obtained when the atom is initially in superposition of its upper and ground states and the field in coherent state. We evaluate the Mandel Q parameter, phase probability distribution and the field entropy. The influence of the Kerr medium, the detuning and the presence of the intensity dependent coupling on their evolution was discussed.