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Inthispaper,thesqueezingeffectsofalightfieldintheT CmodelisstudiedbymeansofthequantumtheoryintheCounter Rotating Wave Approximation (C RWA) .Ithasbeenshownthat:thelittleindentationwhichrepresentsthequantum noiseofthesystemappearsintheevolutioncurvesofQundertheC RWA ;thequantumnoisewhichiscausedbyvirtualphotonfieldgraduallybecomesweakwhenωincreases;thequantumnoiseincreaseswhen nincreases;thevirtualphotonprocesscanstrengthenthesqueezingeffectobviously .Besides,thedependenceoftheatom fieldcouplingconstantλandtheatom atomcouplingconstantgonthesqueezingeffectsofthefieldisobservedinourresults.







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