main.tex

\documentclass{beamer}

\usepackage{beamerthemecu}
\usetheme{cu}

\graphicspath{{./images}}

% \addbibresource{ref.bib}

\title{This is my title}
\subtitle{}
\author{\href{mailto:myuni@columbia.edu}{Me}\inst{1}}
\institute{\inst{1} Columbia University}
\date{}
\titlebackground{background}

\begin{document}

\input{slides}

\end{document}