Vertical space around title

Question

I'm trying to draw horizontal lines above and below the title and adding some extra space between them and the text. I've being trying this code:

\documentclass{article}

\usepackage[utf8]{inputenc}
\usepackage[margin=2cm]{geometry}

\title{
\rule{\textwidth}{2pt}
\vspace{1cm}
\textbf{Notas en Computación Cuántica}
\vspace{1cm}
\rule{\textwidth}{2pt}
}
\author{John Doe}
\date{April 2019}

\begin{document}

\maketitle

\section{Introduction}

\end{document}

However, the resulting document looks like both \vspace commands are adding the space only below the title, even the one that is placed right above. Can anyone help me?

Answer 1

It's simpler to do it with the tools of the titling package:

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[margin=2cm]{geometry}

\usepackage{titling}
\pretitle{\noindent\rule{\textwidth}{2pt}\bigskip\begin{center}\LARGE\bfseries}
\posttitle{\end{center}\bigskip\noindent\rule{\textwidth}{2pt}}
\preauthor{\vspace*{10ex}\begin{center}\Large}
\postauthor{\end{center}}

\title{Notas en Computación Cuántica}
\author{John Doe}
\date{April 2019}

\begin{document}

\maketitle

\section{Introduction}

\end{document}