Absorption and dispersion by a multiple driven two-level atom

Ficek, Z., Seke, J., Soldatov, A. V., Adam, G. and Bogolubov, N. N. (2002) Absorption and dispersion by a multiple driven two-level atom. European Physical Journal D, 19 3: 411-419. doi:10.1140/epjd/e20020079

Author Ficek, Z.
Seke, J.
Soldatov, A. V.
Adam, G.
Bogolubov, N. N.
Title Absorption and dispersion by a multiple driven two-level atom
Journal name European Physical Journal D   Check publisher's open access policy
ISSN 1434-6060
Publication date 2002
Sub-type Article (original research)
DOI 10.1140/epjd/e20020079
Volume 19
Issue 3
Start page 411
End page 419
Total pages 9
Editor F. T. Arecchi
J.-M. Raimond
Place of publication France
Publisher EDP Science
Collection year 2002
Language eng
Subject C1
240402 Quantum Optics and Lasers
780102 Physical sciences
Abstract We investigate the absorption and dispersion properties of a two-level atom driven by a polychromatic field. The driving field is composed of a strong resonant (carrier) frequency component and a large number of symmetrically detuned sideband fields (modulators). A rapid increase in the absorption at the central frequency and the collapse of the response of the system from multiple frequencies to a single frequency are predicted to occur when the Rabi frequency of the modulating fields is equal to the Rabi frequency of the carrier field. These are manifestations of the undressing or a disentanglement of the atomic and driving field states, that leads to a collapse of the atom to its ground state. Our calculation permits consideration of the question of the undressing of the driven atom by a multiple-modulated field and the predicted spectra offer a method of observing undressing. Moreover, we find that the absorption and dispersion spectra split into multiplets whose structures depend on the Rabi frequency of the modulating fields. The spectral features can jump between different resonance frequencies by changing the Rabi frequency of the modulating fields or their initial phases, which can have potential applications as a quantum frequency filter.
Keyword Physics, Atomic, Molecular & Chemical
2-level Atoms
Resonance Fluorescence
Polychromatic Fields
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Physical Sciences Publications
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Created: Tue, 14 Aug 2007, 17:53:20 EST