I've since switched my research focus to machine learning (look up latent Dirichlet allocation, very cool stuff). I find a lot of parallels between the two fields: prob. theory, matrices, uncertainty, ...

I'm still following quantum information theory research, but more as a spectator from the sidelines. However, a couple of weeks ago I had to come back to quantum info. theory to "defend" my academic reputation. Our colleagues from TIFR found a bug in one of our papers (http://arxiv.org/abs/1111.3645v3) so my coauthor and I had to fix it. It was kind of cool to see I hadn't "lost my quantum skills" after two years of running a business. I guess, once you go quantum you never go back? :)