\documentclass[preview, border=40px]{standalone}
\usepackage{../quantumcubemodel}
\begin{document}
\begin{qcmx}
    \qcmxOO{0.5}
    \qcmxOI{0.71}
    \qcmxIO{0.5}
    \qcmxRenderQQ
    \qcmxClearQQ

    \def\qcmxOffsetX{15}
    \def\qcmxOffsetY{3}
    \qcmxRenderMeasureQQ{x}

    \def\qcmxOffsetX{25}
    \def\qcmxOffsetY{0}
    \def\qcmxOrientationQ{y}

    \node at (25, 13, 0) {\Huge with $p_0 = 0.75$};
    \qcmxO{0.57}
    \qcmxI{0.81}
    \qcmxRenderQ
    \qcmxClearQ

    \node at (35, 13, 0) {\Huge with $p_1 = 0.25$};
    \def\qcmxOffsetX{35}
    \qcmxO{1}
    \qcmxRenderQ
    
\end{qcmx}
\end{document}