耗散腔中双原子与光场非共振相互作用系统的光场压缩

摘要

By means of numerical calculations, the squeezing property of the light field in the non-resonant system of two entangled atoms interacting with coherent field in dissipative cavity is studied. The effects of the detuning between the atom and cavity field, the initial field intensi- ty, the decay of the cavity field on the light squeezing are discussed. The results show that when two entangled atoms interact with coherent field in the non-resonat system, light squeezing may occur, the squeezing degree has the periodicity with the time evolution. Also, the squeezing de- gree of light field becomes strong, the squeezing time increases, when the initial field intensity is adjusted appropriately. With the increase of the decay of the cavity field, the squeezing degree of light field gradually becomes weak, the squeezing time gradually decreases.%采用数值计算的方法,研究了处于耗散腔中的纠缠双原子与相干光场相互作用系统中光场的压缩特性。讨论了原子与光场间的失谐量、初始光场强度和腔场的衰减对光场压缩的影响。结果表明,初始处于纠缠的两原子与相干光场非共振相互作用时,光场出现压缩现象,其压缩程度随着时间出现周期性振荡,而适当调节初始光场的强度,可增强光场的压缩程度,延长光场的压缩时间,但随光腔衰减的增强,光场的压缩程度逐渐减弱,压缩时间缩短。