^PNG((The original picture  it taken over from [[http://physicsforme.com/2012/11/05/entangle-schrodingers-cat-to-up-its-quantum-weirdness/|Physics4me]]))|{{blue_cat.png?50}}|{{red_cat.png?70|}}|{{cat.png?120|}}|

  \documentclass[]{standalone}
  \usepackage{tikz}
  \usepackage{tikz-3dplot}
  \begin{document}
  \tdplotsetmaincoords{60}{130}
  \begin{tikzpicture}[scale=1, transform shape,tdplot_main_coords]
  \coordinate (O) at (0, 0, 0);
  \filldraw[green, opacity = .25]
       (0, 0, 0)
        -- (5,0, 0)
        -- (5, 5, 0)
        -- (0, 5, 0)
        -- cycle;
  \filldraw[green, opacity = .1]
       (-1.5, -1.5, 0)
        -- (-1.5, 5, 0)
        -- (5, 5, 0)
        -- (5, -1.5, 0)
        -- cycle;
  \draw[thin, dashed, opacity=0.3] (O) -- (-1.5, 0, 0) ;
  \draw[thin, dashed,opacity=0.3] (O) -- (0, -1.5, 0) ;
  \draw[thin, dashed,opacity=0.3] (O) -- (0, 0, -1.5) ;
  \draw[-] (O) -- (5, 0, 0) node[font = \small, pos = 1.1] {$x$};
  \draw[-] (O) -- (0, 5, 0) node[font = \small, pos = 1.1] {$y$};
  \draw[-] (O) -- (0, 0, 5) node[font = \small, pos = 1.1] {$z$};
  \draw[thick,blue,-latex] (O) -- (4, 0, 0)node[above]{\includegraphics[scale=0.25]{blue_cat.png} };
  \draw[thick,red,-latex] (O) -- (0, 4, 0)node[above]{\includegraphics[scale=0.25]{red_cat.png} };
  \draw[thick,-latex] (O) -- (4, 4, 0)node[below]{\includegraphics[scale=0.25]{cat.png} };
  \draw[thin,dashed](4, 0, 0)-- (4,4,0);
  \draw[thin,dashed](0, 4, 0)-- (4,4,0);
  \end{tikzpicture} 
  \end{document}