Quantum-classical correspondence and mechanical analysis of a classical-quantum chaotic system
Bi Haiyun1, 3, Qi Guoyuan2, †, Hu Jianbing1, Wu Qiliang4
       

The Wigner distribution in 3D space: (a) (x1, x3, W) and (b) (x2,x4,W), 2D plane: (c) (x1,x3) and (d) (x2,x4), (e) W–x3, (f) frequency spectrum of the rectangular pulse signal.