1 湖北师范学院物理与电子科学学院, 湖北 黄石 435002
2 湖北理工学院机电工程学院, 湖北 黄石 435003
3 中国科技大学大学材料科学和工程系, 安徽 合肥 230026
文中引入一类新的量子态-逆坐标算符激发相干态。利用有序算符内积分技术,我们将逆坐标算符激发相干态转换成是厄米多项式激发相干态的叠加态,导出了逆坐标算符的正规乘积,以及该激发相干态的归一化系数;基于Wigner算符的相干态表示,进一步导出了该激发相干态的Wigner函数的解析表达式。特别是利用Wigner函数的负部特征,讨论了该量子态的非经典性。
逆坐标算符激发相干态 Wigner函数 非经典性 inverse coordinate operator excited coherent state Wigner function nonclassical property
Author Affiliations
Abstract
College of Fundamental Studies, Shanghai University of Engineering Science, Shanghai 201600, China
Output nonlocality and nonclassicality for the two modes are investigated in an entanglement laser system. Within the framework of a quantum theory of multiwave mixing, nonlocality and nonclassicality are discussed according to the violations of Bell inequality and Cauchy-Schwarz inequality. It is found that both nonlocality and nonclassicality can be fulfilled in the outside cavity fields under certain conditions. It is also shown that there are some nonclassical states that do not show nonlocality.
非局域性 非经典性 纠缠激光 270.0270 Quantum optics 140.0140 Lasers and laser optics Chinese Optics Letters
2011, 9(9): 092701
