\documentclass[preview,convert={indir={aux/}, outdir={aux/}, outputdir={aux/}},border=40px]{standalone}
\usepackage{quantumcubemodel}

\begin{document}
\begin{qcmx}
\qcmxO{0.79}
\qcmxI{0.61}
\qcmxRenderQ

\node at (15, 0) {\Huge $\otimes$};

\def\qcmxOrientationQ{y}
\def\qcmxOffsetX{18}
\def\qcmxOffsetY{-5}
\qcmxO{0.35}
\qcmxI{0.93}
\qcmxRenderQ

\node at (23, 0) {\Huge $=$};

\def\qcmxOffsetX{27}
\def\qcmxOffsetY{-5}
\qcmxOO{0.28}
\qcmxOI{0.73}
\qcmxIO{0.21}
\qcmxII{0.57}
\qcmxRenderQQ
\end{qcmx}
\end{document}