Cavity QED analog of the harmonic-oscillator probability distribution function and quantum collapses

Ficek, Z. and Swain, S. (2001) Cavity QED analog of the harmonic-oscillator probability distribution function and quantum collapses. Physical Review A, 63 6: . doi:10.1103/PhysRevA.63.063815

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Author Ficek, Z.
Swain, S.
Title Cavity QED analog of the harmonic-oscillator probability distribution function and quantum collapses
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
Publication date 2001
Sub-type Article (original research)
DOI 10.1103/PhysRevA.63.063815
Open Access Status File (Publisher version)
Volume 63
Issue 6
Total pages 10
Editor B. Crasemann
Place of publication United States
Publisher American Physical Society
Collection year 2001
Language eng
Subject C1
240301 Atomic and Molecular Physics
780102 Physical sciences
Abstract We establish a connection between the simple harmonic oscillator and a two-level atom interacting with resonant, quantized cavity and strong driving fields, which suggests an experiment to measure the harmonic-oscillator's probability distribution function. To achieve this, we calculate the Autler-Townes spectrum by coupling the system to a third level. We find that there are two different regions of the atomic dynamics depending on the ratio of the: Rabi frequency Omega (c) of the cavity field to that of the Rabi frequency Omega of the driving field. For Omega (c)< and moderate coupling of the transition to the cavity mode the spectral peaks are composed of multiplets. A quantized dressed-atom approach provides a simple explanation of the spectral features and shows that the oscillations in the spectral components arise from the oscillations of the population distribution in the dressed states. The observation of these features would provide evidence for the quantum nature of the cavity field. The distribution is an analog of the harmonic-oscillator probability distribution function, and should be experimentally observable. For Omega (c)greater than or equal to Omega there is no Autler-Townes splitting and the spectrum is composed of a single peak located at the frequency of the probe transition. We show that this effect results from the collapse of the atom to the ground state, which has been predicted by Alsing, Cardimona, and Carmichael [Phys. Rev. A 45, 1793 (1992)] for a two-level atom in a lossless cavity.
Keyword Optics
Physics, Atomic, Molecular & Chemical
One-atom Maser
Resonance Fluorescence-spectrum
Photon-correlation Spectroscopy
Jaynes-cummings System
Driven 2-level Atom
Optical Cavity
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Physical Sciences Publications
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Created: Tue, 14 Aug 2007, 16:01:05 EST