"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Steady-state solutions of the density matrix equations for multiple resonance experiments

F. F. POPESCU1,*

Affiliation

  1. Department of Physics, University of Bucharest, Magurele, RO-077125, Bucharest, Romania

Abstract

Analytical steady-state solutions of the density matrix equation for a spin or an atomic multiplet subjected to two or three electromagnetic fields near resonance are obtained within the semiclassical approach, in the nondegenerate case. In comparison with other treatments, these solutions do not assume simplified approximations concerning the number of levels, or the relative magnitudes of the Rabi frequencies and relaxation rates. Consequently, they contain all possible interference effects among single and multiple quantum absorption and emission processes, and parametric processes. The solutions are useful not only for double or triple resonance experiments, they can be used to find the conditions that are necessary to attain optimum quantum amplification and detection, or maximum frequency conversion efficiencies and resonant enhancements corresponding to three or four wave mixing processes..

Keywords

Double and triple resonance, Quantum amplification and detection, Frequency conversion, Density matrix equation.

Submitted at: Nov. 28, 2006
Accepted at: Sept. 18, 2007

Citation

F. F. POPESCU, Steady-state solutions of the density matrix equations for multiple resonance experiments, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 9, pp. 2719-2723 (2007)