https://doi.org/10.1140/epjd/e2011-20169-1
Regular Article
Modulation in the statistical properties of stochastic electromagnetic beams through an electromagnetic induced transparency atomic vapor
1
Department of Physics and Institute of Condensed Matter Physics,
Hangzhou Normal University, Hangzhou
310036, P.R.
China
2
Department of Physics, Zhejiang University,
Hangzhou
310027, P.R.
China
a e-mail: zhaodaomu@yahoo.com
Received:
20
March
2011
Received in final form:
3
September
2011
Published online:
22
November
2011
We report analytical expressions for the elements of the 2 × 2 cross-spectral density matrix of a stochastic electromagnetic beam passing through an electromagnetic induced transparency (EIT) atomic vapor. By use of the derived formulas the changes in the spectral density, the spectral degree of coherence, and the spectral degree of polarization of such a beam on propagation can be studied in detail. Numerical examples show that the statistical properties of the stochastic electromagnetic beam can be modulated by the Rabi frequency of the control light when the beam propagates through the EIT atomic vapor.
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag 2011
