Abstract
We have analyzed photon statistics and quadrature squeezing of the signal mode produced by one-mode subharmonic generator. It is found that the mean photon energy of the signal mode is twice of a twin signal light beam. And the energy fluctuations of the two signal light beams are four times that of one of the signal light beams. We have also shown that the photon energy quadrature squeezing of the output signal mode is exactly equal to that of the cavity signal mode. In light of this, the global quadrature squeezing of the signal mode is independent of the mean photon energy. On the basis of the above results, the quantum analysis of a one-mode sub-harmonic generating system should somehow be modified.
Highlights
A one-mode sub-harmonic generator is one of the most interesting and well-studied quantum optical systems
Since the other set of the signal photons is not included in such analysis, we seek to resolve this problem by superposing the Q function of the two set of signal photons, each set consisting of one photon from each pair
We studied photon statistics and quadrature squeezing of the two signal light beams produced by one-mode sub-harmonic generator
Summary
A one-mode sub-harmonic generator is one of the most interesting and well-studied quantum optical systems This system consists of a nonlinear crystal which is pumped by coherent light and placed inside a cavity coupled to a vacuum reservoir. This quantum optical process leads to the generation of squeezed light. Belete usually carried out employing the operator’s aand a+ Such analysis leads, among others, to onehalf of the mean photon number of the signal mode [2] [4]-[8] [10]-[14]. The resulting Q function is used to determine the mean photon number, the mean energy, the variance of the photon number, the energy fluctuations, the photon number quadrature variance, the photon energy quadrature fluctuations, the photon number quadrature squeezing and the photon energy quadrature squeezing of the two signal light beams
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