Quantum engineering requires accurate methods for measuring various properties of quantum systems. Quantum measurements are much more diverse and complex than their classical counterparts. There are many different kinds: accurate (strong), inaccurate (weak), impulsive consecutive, finite-time, continuous, etc.
The uncertainty principle implies that a non-negligible back action is produced whenever a measuring device destroys coherence between otherwise interfering alternatives. One objective of the project would, therefore, involve systematic studies of various aspects of quantum measurement theory.
Equally important are the practical realisations of the quantum meters (detectors), which often involve a large number of degrees of freedom. Among such "hybrid devices" are the electronic point-contact and its bosonic counterpart, the bosonic junction.