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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 : 411-419.
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| Author(s) |
Ficek, Z.
Seke, J.
Soldatov, A. V.
Adam, G.
Bogolubov, N. N.
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| Title |
Absorption and dispersion by a multiple driven two-level atom
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| Journal name |
European Physical Journal D
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| Publication date |
2002
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| Volume number |
19
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| ISSN |
1434-6060
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| Start page |
411
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| End page |
419
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| Total pages |
9
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| Editor(s) |
F. T. Arecchi
J.-M. Raimond
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| Place of publication |
France
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| Publisher |
EDP Science
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| Collection year |
2002
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| Language |
eng
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| Subject |
C1
240402 Quantum Optics and Lasers
780102 Physical sciences
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| 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.
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| Keyword(s) |
Physics, Atomic, Molecular & Chemical
2-level Atoms
Resonance Fluorescence
Polychromatic Fields
Spectrum
Systems
Index
Spectroscopy
Transparency
Refraction
Coherence
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