Two-Mode Coherent and Subharmonic Output Light
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Date
2012-02
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Addis Ababa University
Abstract
With the aid of c-number Langevin equations, we have calculated the Q-functions for
the two-mode coherent and subharmonic cavity light beams. Applying the input-output
relation, we have obtained the Q-functions for the two-mode coherent and subharmonic
output light beams. We have then determined the Q-function for the superposition of
these two output light beams. With the help of the pertinent Q-functions for the output
light, we determined the output photon statistics. We have calculated the mean and vari-
ance of the photon number sum and di erence for the two-mode coherent output light,
the two-mode subharmonic output light, and the superposed two-mode coherent and sub-
harmonic output light beams.
We have found that photon stastics of the two-mode coherent output light is Pois-
sonian and that of the subharmonic output light is super Poissonian. And the output
signal and idler modes are separately in a chaotic states. In addition, the mean photon
number for the superposed output light turns out to be the sum of the mean photon
number of the two-mode coherent output light and that of the two-mode subharmonic
output light
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Keywords
Two-Mode Coherent