Quantum information processing aims to overcome the classical limitations on computation, communication and metrology by harnessing the complexity and apparent nonlocality of quantum dynamics. It is predicated upon the ability to precisely and efficiently control and observe the dynamics of multi-particle quantum systems. The holy grail of the field is a quantum computer, that is a quantum information processor that can be scaled up to an essentially arbitrarily large system. Today we have small quantum processors that serve as test-beds for coherent control. I will discuss how these test-beds can help develop robust quantum computation and how we can test many of the requirements of fault tolerant quantum computation.
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