Resonance fluorescence spectrum in a weak squeezed field with an arbitrary bandwidth

Ficek, Z, Seke, J and Kralicek, R (1998) Resonance fluorescence spectrum in a weak squeezed field with an arbitrary bandwidth. Physical Review A, 58 2: 1597-1600. doi:10.1103/PhysRevA.58.1597

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Author Ficek, Z
Seke, J
Kralicek, R
Title Resonance fluorescence spectrum in a weak squeezed field with an arbitrary bandwidth
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
Publication date 1998-01-01
Sub-type Article (original research)
DOI 10.1103/PhysRevA.58.1597
Open Access Status File (Publisher version)
Volume 58
Issue 2
Start page 1597
End page 1600
Total pages 4
Language eng
Abstract We analyze the linewidth narrowing in the fluorescence spectrum of a two-level atom driven by a squeezed vacuum field of a finite bandwidth. It is found that the fluorescence spectrum in a low-intensity squeezed field can exhibit a (omega - omega(0))(-6) frequency dependence in the wings. We show that this fast fall-off behavior is intimately related to the properties of a narrow-bandwidth squeezed field and does not extend into the region of broadband excitation. We apply the Linear response model and find that the narrowing results from a convolution of the atom response with the spectrum of the incident field. On the experimental side, we emphasize that the linewidth narrowing is not sensitive to the solid angle of the squeezed modes coupled to the atom. We also compare the fluorescence spectrum with the quadrature-noise spectrum and find that the fluorescence spectrum for an off-resonance excitation does not reveal the noise spectrum. We show that this difference arises from the competing three-photon scattering processes. [S1050-2947(98)04308-X].
Keyword Optics
Physics, Atomic, Molecular & Chemical
Absorption-spectrum
Optical-spectra
Vacuum
Light
Excitation
Atoms
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Physical Sciences Publications
 
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Created: Mon, 13 Aug 2007, 20:34:36 EST