Transition probabilities in three-electron systems

M N Krivoguz, Oleg M. Sarkisov, Stanislav Ya Umanskii

The effect of phase modulation of a femtosecond light pulse on three-photon absorption in a diatomic system is studied. Direct three-photon transitions between the initial and final electronic states are considered. The total populations of the final electronic state are calculated for different modulation types as functions of the parameter describing modulation. It is found that the effect of modulation on the three-photon excitation probability substantially depends on the modulation regime. The results of calculations are compared with available experimental data.

Wolfgang L. Wiese, Daniel E. Kelleher, Jeffrey R. Fuhr +1 more

Solomon Budnik

We discuss the virtual model of a bosonic superconducting cosmic string (fig. 1) compared to our actual model of a quantum electronic system (fig. 2) that enables the creation of quantum generator for flexible (folded) quantum nano-computers, and space computer and TV displays in quantum telecom and cyberspace based on three fundamental laws of physical-chemical kinetics: (1) the law of entire equilibrium, (2) the law of the duality of elementary processes (or the equality of direct and reverse transition probabilities), and (3) the law of equal a priori probabilities. It is shown that said three laws follow from the law of the symmetry of time, and furthermore, that the first and third of these laws are both derivable from the second.

Wolfgang L. Wiese

Charles W. Clark

P. Zoller, Monika A. M. Marte, Daniel F. Walls

We consider a three-level atomic system driven strongly on one transition and weakly on the other. The excited state on the weak transition is assumed to be metastable. We give an analysis of the fluorescence from the strong transition in terms of the elementary probability density ${p}_{[0}$,t)(${\mathrm{t}}_{1}$,${t}_{2}$,..., ${t}_{n}$) which gives us the probability density that exactly n photons are emitted at times ${t}_{1}$,${t}_{2}$,...,${t}_{n}$ by the atom in the time interval [0,t). We show that ${p}_{[0}$,t) essentially factorizes into products of conditional densities c\ifmmode \tilde{}\else \~{}\fi{}(\ensuremath{\tau}) that, given a photon is emitted at time zero, the next photon emission occurs at time \ensuremath{\tau}. This enables a simulation of the individual photon emissions to be given which shows directly the existence of prolonged dark windows in the fluorescence corresponding to the shelving of the electron in the metastable state or ``quantum jumps.''