Investigation of Quantum Properties of Output Radiation from Single-Mode Subharmonic Generator
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Date
2018-08-05
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Addis Ababa University
Abstract
In this project we studied the squeezing as well as the statistical properties of the
output light produced by single-mode subharmonic generating system coupled to vacuum
reservoir. We obtained the c-number Langevin equations employing the master equation
for the system under consideration. Applying the solutions of these equations, we determined
the anti-normally ordered characteristic function which enables us to obtain the Q
function. Using the Q function, we have obtained the mean and variance of the photon
number and photon number distribution for cavity mode. Moreover, with the aid of the
solutions of c-number Langevin equations and input-output relation, we obtain the mean
photon number, power spectrum, quadrature variance and quadrature squeezing for the
output mode. Finally, for cavity and output mode we found that squeezing occurs in
the plus quadrature. In addition, when single-mode subharmonic generator is coupled to
vacuum reservoir, the output light generated by the system is in squeezed state and we
found that there is 40% squeezing of the output light and 50% squeezing of the cavity
light below the vacuum level at steady state and threshold.
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Keywords
Investigation of Quantum, Output Radiation, Single-Mode Subharmonic Generator