联合增光子二模圆态的非经典性质

Nonclassical Properties of Nonlocal Coherent Photon- Added Two-Mode Circular State

摘要:

理论上研究了联合增光子二模圆态的互相关函数，亚泊松分布等非经典特性。数值计算表明激发数和叠加态数对这些特性有明显的影响。当叠加态数 时，交叉关联函数随单模平均光子数的增大而单调减小， 并且联合增光子二模圆态存在关联效应。随着叠加态数的增加，二模光场间的关联效应将减弱。当叠加数 时，只有当激发数 时，且单模平均光子数大于某阈值时，联合增光子二模圆态才存在亚泊松分布效应。

Abstract:

We investigate theoretically the nonclassical properties, such as cross correlation function and sub- Poisson distribution effect, for the nonlocal coherent photon-added two-mode circular state. The results show the superposition number and excitation number have significant effect on these properties. When the superposition number , the value of cross correlation function decreases monotonously with the increasing of the average photon number of single-mode and the nonlocal coherent photon-added two-mode circular state has the cross correlation effect. Increasing the superposition number , the cross correlation effect will be reduced. When the superposition number , sub-Poissonian distribution effect of the nonlocal coherent two-mode photon-added circular state can be observed only when single-mode average photon number is greater than a certain threshold value.