Coherent population trapping: its physics and historical roots
Institute of Automation and Electrometry SB RAS, 630090 Novosibirsk, Russia
* Corresponding author: email@example.com
Published online: 13 December 2016
There presented basic information on coherent population trapping (CPT) and related phenomenon of electromagnetically induced transparence, ‘dark’ and ‘bright’ (anomalous absorption) states is presented. Spectrum transformation is considered in probe field spectroscopy for Λ-scheme in various settings. The close relation is revealed between the effect of CPT in the manifold of magnetic sublevels and the phenomenon of optical pumping (optical orientation and optical alignment). CPT is shown to be generalized to the case of several transitions with a common upper level and with the corresponding number of light fields each being in quasiresonance with its ‘own’ transition.
© The Authors, published by EDP Sciences, 2017
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