Talk on
Quantum measurements and joint measurability

Dr. Daniel Reitzner (TUM)

Measurements in quantum mechanics are, compared to classical measurements,
somewhat non-intuitive and in particular can be incompatible; i.e. a pair
of measurements on a single system can turn out to be impossible to perform
at once. Although it is quite often stated that this is a basis for Heisenberg
uncertainties; we will show the limitations and dangers of this description.
With a more modern and in a sense more general definition of quantum
measurement via POVMs that we shall introduce as well, we will see, that
simultaneous (and/or sequential) measurements are a tricky and still unresolved
concept that has an impact on modern applications within quantum information
community.