The linked paper at the end of the article says, "This study opens a way for the so-far unexplored frontier of encapsulated two-dimensional van der Waals solids with exciting possibilities for fundamental condensed-matter physics research and possible applications in quantum information technology."

If i got right, there are multiple applications that can be studied from this system. Because it was hard to study the behavior of noble gasses with each other as they don't react with anything. Now for the first time, we trapped them together to interact, and took pictures!

One application i can see this helping is in fusion. At least from the math learned from this.

Normally, you would say that all the good chemistry jokes argon, but now there’s a way to trap some of them between two sheets of graphene. Should work with other noble gases too.