克尔介质中压缩真空场与耦合双原子依赖强度耦合系统光场的压缩特性

研究了存在克尔介质时依赖强度耦合单模压缩真空场与耦合双原子非共振相互作用系统光场的压缩性质,运用数值方法讨论了系统参量对光场压缩性质的影响。结果表明:克尔介质、失谐量、原子间相互作用、光场初始压缩因子对光场的压缩性质有较大的影响。随原子间偶极偶极相互作用的增大,光场的压缩随时间逐渐变浅,压缩的次数减少;随克尔效应或失谐量的增大,光场的压缩程度先逐渐变浅后增强、压缩次数先减少后增多;当光场初始压缩因子较小时,光场压缩程度较小,当光场初始压缩因子较大时,光场压缩程度增大;而原子的初始状态对光场的压缩程度没有明显的影响。

Light Squeezing in the System of Squeezed Vacuum Field Interacting with two Coupling Atoms Via Intensity-Dependent Coupling in Kerr Medium

The squeezing property of the light field in the non-resonant system of single-model squeezed vacuum field interacting with two coupling atoms via intensity-dependent coupling in Kerr medium is investigated.By using the numerical method,the relations between the squeezing property of the light field and the coupling parameter of the system are discussed.The results show that the squeezing property of the light field depends on the Kerr medium,the detuning,the interaction between atoms and the initial squeezed factor of light field.With the increase of the dipole-dipole interaction between atoms,the squeezing effect of light field gradually becomes weak and the squeezing time gradually decreases.With the increase of the Kerr effect or the detuning,the squeezing degree of light field gradually becomes weak first and strong later,the squeezing time gradually decreases first and increases later.The squeezing degree of light field is smaller for the cases of the small initial squeezed factor light field.On the contrary,the squeezing degree rises for the cases of the large initial squeezed factor of light field.But the influence of the atomic initial state on the squeezing degree of the light field is not noticeable.