Reducing four-level two-mode Hamiltonian to an effective two-level Hamiltonian with the addition of kerr-like medium | ||
| Delta Journal of Science | ||
| Article 2, Volume 32, Issue 1, June 2008, Pages 1-20 PDF (1.21 M) | ||
| Document Type: Research and Reference | ||
| DOI: 10.21608/djs.2008.152954 | ||
| Authors | ||
| Mervat. A. A. El-Deberky1; Mona. F.M. Ali2 | ||
| 1Mathematics Department, Faculty of Science, Al-Azhar University (Girls Section) | ||
| 2Mathematics Department, Faculty of Science, Ain Shams University | ||
| Abstract | ||
| We consider a two-mode quantized field described in a coherent state interacting with a four-level atom. An effective Hamiltonian is obtained by adiabatically eliminating the intermediate two levels in a cascade and the e process. The influence of the Stark shifts kerr-like medium on the atomic inversion are examined, as well as on the field entropy, atomic purity and Mandel's Q-parameter. The results of the calculations are illustrated numerically | ||
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