通过高阶压缩效应,高阶反聚束效应和二阶亚泊松分布等统计性质,研究了压缩真空态的高阶非经典性质。采用数值计算方法,讨论了压缩参数对态的高阶非经典性质的影响。研究结果表明: 压缩真空态呈现出高阶压缩效应和四阶反聚束效应,并且这些非经典性质均随压缩参数增大而增强。但它未呈现出一至三阶反聚束效应,也没有展示出一阶亚泊松分布和二阶亚泊松分布等特性。

High order nonclassical properties of the squeezed vacuum state,such as high order squeezing,high order anti-bunching,and the second order sub-Poissonian photon statistics,are investigated.The effects of the squeezing parameter on these nonclassical properties are discussed by numerical calculations.The results obtained show that it displays high order squeezing and the fourth order anti-bunching,and they are all strengthened with increase of the squeezing parameter.On the other hand,it does not display the first,the second,the third anti bunching,as well as the first and the second order sub-Poissonian photon statistics.