减少光子奇(偶)对相干态的非经典特性

The Nonclassical Properties of Photon-subtracted Odd (Even) Pair Coherent States

构造了减少光子奇对相干态与减少光子偶对相干态,并用数值模拟方法研究了它们的非经典特性。结果表明,从奇对相干态与偶对相干态的第一个场模取走光子,可以显著地增强第二个场模的光子统计亚泊松分布特性;从奇对相干态的第一个场模取走光子后,在双模光子消灭算符本征值的模较小时可以增强第一个场模的光子反聚束性质。从偶对相干态的第一个场模取走光子,在双模光子消灭算符本征值的模较小时第二个场模的光子反聚束效应得到明显增强。

The photon-subtracted odd （even） pair coherent states are constructed and their nonclassical properties are investigated by using numeric method. The results show that when the photons are subtracted from the first mode in the odd （even） pair coherent states, the sub-Poissonian distributing character of photon statistics of the second mode can be obviously enhanced. When the photons are subtracted from the first mode in the odd pair coherent states, the antibunching effect of the first mode will be enhanced as the modulus of the eigenvalue of the double modes photons annihilating operator is small. When the photons are subtracted from the first mode in the even pair coherent states, the antibunching effect of the second mode will be obviously enhanced as the modulus of the eigenvalue of the double modes photons annihilating operator is small.