The research-goal of our group in this field is to explore the crossover between quantum and classical behaviour, and investigate condensed-matter phenomena associated with this crossover. In particular, R.Whitney [PRL, 2005] has found (in collaboration with scientists from CNRS, CEA, and Grenoble Center for Theoretical physics) a new phenomenon - the geometric dephasing - which may be crucially important in the current conceptual debate on future quantum computers.
In order to investigate transport properties of quantized chaotic systems, a semiclassical theory for weak localization has been developed [R.Whitney et. al, PRL 2005, PRL 2006]. A generalization of its results is going to be applied to neutrons in a gravitational field (work in progress in collaboration with the N.P.P. group).