Response of a two-level atom to a narrow-bandwidth squeezed-vacuum excitation

Messikh, A., Tanas, R. and Ficek, Z. (2000) Response of a two-level atom to a narrow-bandwidth squeezed-vacuum excitation. Physical Review A, 61 033811: 03811-1-03811-8. doi:10.1103/PhysRevA.61.033811

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Author Messikh, A.
Tanas, R.
Ficek, Z.
Title Response of a two-level atom to a narrow-bandwidth squeezed-vacuum excitation
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
Publication date 2000
Sub-type Article (original research)
DOI 10.1103/PhysRevA.61.033811
Open Access Status File (Publisher version)
Volume 61
Issue 033811
Start page 03811-1
End page 03811-8
Total pages 8
Place of publication College Park, MD
Publisher American Physical Soc.
Collection year 2000
Language eng
Subject C1
780102 Physical sciences
240402 Quantum Optics and Lasers
Abstract Using the coupled-system approach we calculate the optical spectra of the fluorescence and transmitted fields of a two-level atom driven by a squeezed vacuum of bandwidths smaller than the natural atomic linewidth. We find that in this regime of squeezing bandwidths the spectra exhibit unique features, such as a hole burning and a three-peak structure, which do not appear for a broadband excitation. We show that the features are unique to the quantum nature of the driving squeezed vacuum field and donor appear when the atom is driven by a classically squeezed field. We find that a quantum squeezed-vacuum field produces squeezing in the emitted fluorescence field which appears only in the squeezing spectrum while there is no squeezing in the total field. We also discuss a nonresonant excitation and find that depending on the squeezing bandwidth there is a peak or a hole in the spectrum at a frequency corresponding to a three-wave-mixing process. The hole appears only for a broadband excitation and results from the strong correlations between squeezed-vacuum photons.
Keyword Optics
Physics, Atomic, Molecular & Chemical
Anomalous Resonance Fluorescence
2-level Atom
Phase Decays
Finite-bandwidth
Light
Systems
Inhibition
Spectrum
Driven
Absorption
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Physical Sciences Publications
 
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Created: Mon, 13 Aug 2007, 11:39:06 EST