Two photons everywhere. E. Zubizarreta Casalengua, F. P. Laussy and E. del Valle in Phil. Trans. R. Soc. Lond. A 382:20230315 (2024).   What the paper says!?

I wrote a long series (four part) of tweets to break down the content of this paper:

• Part 1: Kindergarten.
• Part 2: The paper.
• Part 3: The circle.
• Part 4: The crème de la crème.

There you can see things one cannot find anywhere else, like Dalibard on steroids [1]: