Control and dynamics of quantum networks
Prof. Dr. Gernot Alber
(Institut für Angewandte Physik, Technische Universität Darmstadt)
13.01.2010
A central problem of quantum information science is the control of
large many-body quantum systems which are formed by distinguishable two-level (qubit) systems. During recent years a number of powerful tools have been developed for this purpose. It is a main aim of this talk to discuss basic ideas underlying these quantum control methods which are of central
importance for the realization of quantum memories and quantum information processors. Apart from the point of view of quantum control qubit networks also exhibit interesting dynamical features. As an example, recent results on the dynamics of large quantum networks under repeated applications of random unitary operations are discussed. It is demonstrated that the resulting asymptotic long-time dynamics exhibits interesting regular dynamical patterns.