Experimental Optics and Photonics

The propagation of a wave package:

https://synqs.github.io/tutorials/02_wave_package.html

There is also a beautiful book by Serge Haroche and Jean-Michel Raimond, which is called Exploring the Quantum. You can find it at plenty of different places online. It will very instructive to understand the experiments on cats.

And here are also some of my former lecture notes:

https://www.authorea.com/users/143341/articles/372613-lecture-7-raising-schr%C3%B6dingers-cat