I have accepted an offer for a CS PhD at a US university. Unlike most other schools to which I applied, this university does not require that incoming students immediately start working for a professor of interest (POI). We receive a university scholarship the first year, and can take our time to decide.
My question is: when should I start contacting POIs*? I have someone in mind already and we met on visit day, but maybe my mind will change over the summer. Should I wait to meet her again? Wait until I move to the new city and start taking classes? Read a dozen more of her papers first? If I wait, do I run the risk of her going with another student—assuming she has limited resources and spots available?
*In this case, a "POI" is not necessarily a final advisor, just someone I would like to work with during the first year. I suppose in the ideal case, we get along very well and just keep working together.