The university of Colorado at Boulder has a working relationship with NIST, national institute of Standards and Technology which has a really large and good quantum information/key exchange/computing group. In fact they have several groups of people working on the creation of quantum bits and quantum computers. Some names to look for Sae-Woo Nam, phase-encoded qubits using lasers, and Rich Simmonds who is using Josephson junctions to create qubits. Both of these people are well established/respected and both have viable schemes up and running, and therefore money. The thing about the field is that only a few approaches of the many initial propositions are getting anywhere. These include: entangled photons, josephson junctions, and potentially quantum dots. A lot of the research is done by the government. As for other universities I think that the best woudl be CU Boulder, Caltech/JPL and University of Maryland (I think. NIST Gaithersburg is in Maryland and so i'm sure whatever university is near it has a strong program.) Hope that helps.