将(a,b)双模产生算符组合和双模压缩算符先后作用在双模真空态上,构建了算符组合激发双模压缩真空态。采用数值计算方法,讨论了双模压缩参数和组合系数对b模压缩效应、反聚束效应、Q参量及两模间纠缠量等量子特性的影响。研究结果表明,b模光场不呈现压缩效应;随着压缩参数或组合系数u的增大,b模的反聚束效应和亚泊松分布性质均减弱。随着压缩参数的增大,两模间纠缠量增大;双模间纠缠量与算符组合系数间存在非线性关系。

With the successive operation of the creation operator combination of two-mode (a, b) and the two-mode squeezing operator on a two-mode vacuum state, a two-mode squeezed vacuum state excited by combination operators is constructed. By the numerical calculation method, the influences of two-mode squeezing parameter and combination coefficient on the quantum properties such as the squeezing effect of mode b, the anti-bunching effect, the Q parameter and the two-mode entanglement degree are discussed. The study results show that the mode b does not display the squeezing effect while the anti-bunching effect and the sub-Poissonian distribution property of mode b are both weakened with the increase of the squeezing parameter or the combination coefficient u. The entanglement degree between the two modes becomes larger with the increase of the squeezing parameter. And there exists a non-linear relationship between the two-mode entanglement degree and the operator combination coefficient.