增光子圆态及其性质

利用光场产生算符的逆算符作用于圆态来构造增光子圆态.讨论了此态的非经典性质,同时计算并模拟出它的维格纳(Wigner)函数.结果表明,在不同光强下,随着激发数的增大增光子圆态光场的平均光子数增加与减少交替地出现;光子激发后,光场的亚泊松统计特性得到增强,压缩效应却受到抑制.维格纳函数图像显示了增光子圆态显著的非经典性质,发现了光子激发与圆态光强的增大都能使量子态由叠加引起的干涉效应明显增强.另外,在不同叠加数的情况下,通过适当选择参量可使维格纳函数具有相同的变化规律.

Photon-Added Circular States and Their Propertities

The photon-added circular states are introduced by repeated application of Bose inverse operators on the circular states. Its non-classical properties are discussed, the Wigner function are derived. It is shown that the mean photon number is alternant changes between increase and decrease after photon adding in different strength regimes of the optical fields. Photon inverse operator can enhance sub-Poissonian distribution and suppress squeezing effects. It is also found that the quantum interference effects can be enhanced with the increases of photon-adding number and strength of light. For the different number of superposition,the same characteristics of the Wigner function can be obtained by choosing the suitable parameters.