Two-Mode Coherent and Subharmonic Light Beams
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Date
2011-06
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Addis Ababa University
Abstract
Applying c-number Langevin equations, we have calculated the Q function for the two-
mode coherent and subharmonic light. We have then determined the Q function for the
superposition of these two light beams. With the aid of the pertinent Q functions, we
have obtained the mean and variance of the photon number sum and di erence for the
two-mode coherent light, the two-mode subharmonic light, and the superposition of the
two-mode coherent and subharmonic light beams.
We have found that the signal and idler modes are separately in chaotic states. We
have also found that the mean photon number for the superposition of two-mode coherent
and subharmonic light turns out to the sum of the mean photon number of the individual
light beams
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Keywords
Subharmonic Light Beams