\documentclass[aps,reprint]{revtex4-2}

\usepackage[english]{babel}
\usepackage[utf8x]{inputenc}
\usepackage[a4paper]{geometry}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{amssymb}
\usepackage{microtype}
\usepackage{hyperref}
\usepackage{physics}

%%%%%%%%%%%%%%%%%%% TEMPLATE DEFNITION: DO NOT MODIFY! %%%%%%%%%%%%%%%%%%%%%%%%%%

\onecolumngrid % Single column.

\makeatletter
\newcommand{\printentry}{%
    \@author@finish%
    \title@column %
    \titleblock@produce %
    \suppressfloats[t] %
    \let\@AAC@list\@empty %
    \let\@AFF@list\@empty %
    \let\@AFG@list\@empty %
    \let\@address\@empty %
    \titlepage@sw %
    {\vfil\clearpage}%
}
\makeatother

\newcommand{\printheader}{%
    \title{\normalsize Submission to QCMC 2022 \\ %
            International Conference on Quantum Communication,\\ 
            Measurement and Computing 2022}
    \printentry
}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\begin{document}

\printheader

%%%%%%%%%%%%%%%%%%%%%%%% TO BE FILLED IN BY AUTHORS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%


\title{Title} % Please indicate the title with \title
\author{Author1, Author2,...} % Please indicate the authors with \author
\affiliation{Affiliation(s)} % Use \affiliation command to specify the affiliations.

\printentry
\title{\small Abstract}
\begin{abstract}
  % Please include the abstract here.
  [One page maximum, including the header above]
\end{abstract}
\printentry

\end{document}