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OPERATION OF A FOUR-LEVEL OPTICAL GENERATOR

Yu. A. Anan’ev, V. F. Egorova, A. A. Mak, D. S. Prilezhaev, B. M. Sedov

Published Jun 1, 1963• 0 citations
OpenAlex

Abstract

The properties of a four-level optical quantum generator are studied theoretically and experimentally. Conditions for transition from four-level to three-level generation are found for the case of CaF2: U/sup 3+/. (auth)

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ON THE OPERATION OF A FOUR-LEVEL OPTICAL QUANTUM GENERATOR,

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A theoretical and experimental investigation was made of the properties of a four-level optical quantum generator. Conditions were found for the transition from four-level to three-level generation in a generator on a CaF2:U(3+) base. (Author)

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International Conference on Quantum Information•Jan 1, 2007•0 citations
Abstract : On the basis of the probability method and the resonator theory, it is possible to explain the basic properties of quantum generators of light and in a number of the most important cases to obtain quite accurate correlation with experiment. During use of probability method of calculation, energy levels and probability of transition between them are used as initial data. The main problem is reduced to determination of populations of separate levels depending upon intensity of irradiation, with subsequent calculation of number of optical transitions. In quantum generators it is necessary to consider transitions between levels which appear under the action of pumping radiation, as well as under action of the generated radiation itself.
Summary form only given. We study the optical properties of negative dispersive but nevertheless transparent media. Such medium can be generated using atomic phase coherence. Theoretical studies have shown that strongly driven two level systems may exhibit the desired optical properties, that is negative dispersion of a well defined amount at a point of vanishing absorption. When this medium is placed inside an optical resonator the linewidth is increased without sacrificing its build up. We present the experimental setup which is used to realize a negative dispersive non-absorbing medium. To obtain a strongly driven two level system a calcium atomic beam is pumped at the transition 4s/sup 21/S/sub 0//spl rarr/4s4p/sup 1/P/sub 1/. The optical properties of the beam are studied.
Results of comprehensive theoretical and experimental studies on creation of a Quantum Random Number Generator prototype based on the implementation of double radio optical resonance in the vapour of the rubidium isotope are presented. A method is developed for the analytical and numerical solution of the coupled-mode Quantum Random Number Generator equation, which describes the mode of interaction of quantum generators in the process of measuring their parameters. A feature of the proposed method is the possibility of studying quantum phase noise and the width of the quantum discriminators line on alkali metal vapours in the presence of an interaction error.