Hi, I'm in the third year of my undergraduate studies - physics - and trying to begin with some research. I am really interested in quantum optics - and rather experimental than theoretical. There is a center for quantum information at my university, which has a really good reputation, but they are working on theory, which I am somehow "scared of" - I simply can't imagine myself being a theorist. I am not sure if I could be the one to discover anything new in theory, although I don't have problems with Theoretical subjects (like Theoretical and Quantum mechanics, from which I've got A's). On the other hand, the optics department is on a very poor level. They do some research in holography and optical communication systems, but they have a very bad reputation and don't do anything related to quantum optics. So my question is: Should I: 1. go for optics, do something in optoelectronics and later to go to a grad school where they do experimental QO 2. go for theoretical QO and later to go to a grad school where they do experimental QO 3. go for theoretical QO If (answer == 2), does one need all the subjects like: Differential Geometry Lie Groups Standard model Renormalisation QFT Mathematical physics ?