<p>The sources of the article are available on arxiv, so you could simply check the .tex file which essentially boils down to</p>
<pre><code>\documentclass{revtex4-2}

\usepackage{newpxtext}

\begin{document}
In the era of Noisy Intermediate Scale Quantum Computers
\end{document}
</code></pre>
Which font-family was used in this arxiv-paper?
<p>I was not able to find the font-family used in this paper: <a href="https://arxiv.org/pdf/2204.00015.pdf" rel="nofollow noreferrer">https://arxiv.org/pdf/2204.00015.pdf</a>.</p>
<p>Is it a default font or an external one?</p>