I'm an undergraduate student. I have learned something about research. But in my university currently most professors are working on condensed matter physics, a few AMO. I think I really need someone to guide my career because I can't get myself interested in condensed matter experiments (especially those to develop new materials or having seldom to do with the "physics things") for now.
I am going to give you the same (very good) advice that I received when I asked a similar question a few months ago: don't ask us, ask them.
- Find the names of some quantum information theorists.
- Send a brief and polite email expressing interest in their research.
- Ask them what kind of things you should specialise in, or what type of courses you should take to help you reach your goal.
- Don't be surprised if you don't get too many responses; academics are busy people.
- Keep trying. If that's the area of research you really want to pursue, go for it. Read some journal articles. Find a good textbook and get stuck in.
Finally (and this is an important one), as Martin said in his answer to my question:
"Quite a lot of people in senior levels in cosmology are interested in cosmology and are glad to find interest in cosmology in other people."
and this applies to quantum information too.