Question on LaTeX in Axis Labels in Pluto with Plots.jl


I’m watching this video here in which a plot has been created in a Pluto notebook and which appears to be the GR backend. I’ve tried to reproduce it but I can’t get my text to be superscripts and keep the original font, even with the LaTeXStrings package. See below.

Does anyone know how he was able to do it in the video?