Correlation And Squeezing Of Parametric Four-Wave Mixing And Fluorescence In Atomic And Atomic-Like Systems

In this paper,the combination of theory and experiment is used to study the parametric amplification four-wave mixing process in atomic system(thermal rubidium vapor)and the nonlinear multi-wave mixing process of Pr3+:Y2SiO5 crystal in atom-like system in low temperature environment(77K).As well as the intensity noise correlation between the different experimental parameters and the intensity difference compression,we also studied the multi-beam fluorescence multi-beam effect of the diamond N V center in the atomic system at room temperature.In the atomic systern,based on the multi-wave mixing of heated helium atomic gas to produce entangled light with high brightness,high signal-to-noise ratio,long coherence time,etc.,we studied the parametric four-wave mixing process in helium atomic gas systems.Optimize the optical gain of the entire system by changing a series of experimental parameters:(a)change the phase angle of the incident in the system(angle phase factor ei:el??)to optimize the nonlinear gain due to the inlay effect;(b)change The aperture phase angle(non-linear phase factor ei:ei??)in the system is also used to optimize the in-line nonlinear gain;(c)Control the detuning of the embossed field to optimize the optical pumping gain of the system.Based on the above optimization of the optical gain of the system caused by the analysis of the various parameters,we have separately modeled a router and a three-stage amplifier.In view of the fact that the constituent devices cannot be miniaturized and inlegrated due to the thermal motion of the atoms and the Doppler effect in the atomic system,we have shifted our focus to the atomic system of the class.First,we introduce experimental diagrams,energy level diagrams(V-type and ?-type)for generating multi-order fluorescence in Pr3+:Y2SiO5 crystals in a low temperature environment(77K),and introduce phase conjugates in each type of energy level system.Four-wave mixing,fourth-order fluorescence,and the basic theory of intensity noise correlation and compression between them;next,we analyze the variation of the laser power by adjusting the power of the laser;finally,the relevant explanations were made by combining theory with experiment.Considering that Pr3+:Y2SiO5 crystals need to exhibit good optical properties in a low temperature environment,in order to realize a device that can be miniaturized and integrated,and can operate at room temperature.We have introduced a special crystal material in the atomic system of the clas?:diamond NV center.First,we briefly introduce the experimental diagram and energy level diagram of multi-order fluorescence in NV center crystal at room temperature,and introduce the theory of multi-beam effect generated by multi-order fluorescence.We study the power of laser.Multi-order fluorescence produces the effects and laws of the multi-beam effect,and the relevant theoretical explanations are given through the combination of theory and experiment.Finally,by analyzing the variation law,we respectively envisage efficient transistor switching models and novel NOR gates-Bunching logic gates.