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Physical Review A

Comment on ‘‘Coherent trapping in continuum-continuum transitions’’

E. Arimondo, N. K. Rahman

Published Apr 1, 1988• 5 citations
Publisher

Abstract

We discuss the theory of Z. Deng and J. H. Eberly [Phys. Rev. A 34, 2492 (1986)] and present our point of view regarding coherent trapping and continua, which is not in agreement with that put forward by these authors.
DOI
10.1103/physreva.37.2706

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We consider the problem of coherent population trapping in a model quantum system consisting of two (and briefly three) coupled continua of energy levels. While an earlier study [Z. Deng and J. H. Eberly, Phys. Rev. A 34, 2492 (1986)] has demonstrated population trapping in a closely related system, it has done so only for the case of a broad featureless continuum. We will demonstrate, on the other hand, that the time evolution of the continuum is qualitatively very different when different types of continua are allowed, and that population trapping is not likely to occur except in the broad featureless continuum. We do show, however, that in some cases other counterintuitive results surface.