隧穿量子点分子模型与光场相互作用系统中光场的相位特性

Phase qroperties in the system of a tunneling quantum molecule model interacting with a cavity field

应用Pegg-Barnett相位理论,研究了隧穿量子点分子模型与光场相互作用系统中光场的相位特性,着重分析了光场的相位概率分布及相位涨落,并讨论了平均光子数和失谐量以及时间对相位概率分布的影响.结果发现:光场相位概率分布在零附近的概率分布最大,且涨落最小,而其它范围内概率分布小且容易振荡,适当调节平均光子数和时间,能使相位概率分布由单峰结构向对称的三峰高斯分布转化,且能调节峰值的大小.

The phase properties in the system of a tunneling quantum molecule model interacting with a cavity field are studied by applying the Pegg-Barnett phase theory, and the phase probability distribution and the phase fluctuation are investigated. Meanwhile, the influence of the mean photon numbers, the detuning and the time on the phase probability distribution is also discussed. The results show that the maximum of the phase probability distribution lies in the point of the zero phases and the phase fluctuation is small, while the value of the probability distribution is relatively small and vibrates easily at other places. The phase probability distribution can be conversed from a single-peak structure to three-peak Gaussian configuration and the peak value can be adjusted by adjusting the photon numbers and the time appropriately.