介观Schrodinger猫态的Wigner函数

Wigner Functions of Schrodinger Cat's States in Mesoscopic Systems

用算符的正规乘积形式加上算符内的有序积分技术（ＩＷＯＰ）及特征函数法计算了介观Ｓｃｈｒｏｄｉｎｇｅｒ猫态──奇相干态、 偶相干态和 Ｙｕｒｋｅ－ Ｓｔｏｌｅｒ态的 Ｗｉｇｎｅｒ函数，并由此而作出的 Ｗｉｇｎｅｒ函数分布图，表明，算符方法研究量子系统的相干和消相干是一个非常有效的方法．

By using the normally ordered forms of operators and the eigenfunctions, we investigate the wigner functions of Schrodinger Cat's states in mesoscopic systems. The figures of Wigner functions is plotted. It is shown that normally ordered form of operators and the eigenfunction are helpful methods for calculating the Wigner functions.