The existence of incompatible measurements is often believed to be a feature of quantum theory which signals its inconsistency with any classical worldview.

One of the peculiar aspects of quantum theory is the existence of pairs of observables that cannot be measured simultaneously. Extracting information about one of the elements of the pair causes an irreversible disturbance on the other, making it…

Accessing the physical sector in quantum gravity models is a challenge, but also an important step towards analysing and testing such models.

We report on our recent experiments performed with cold atoms strongly coupled to a single mode of a high-finesse optical cavity. We demonstrate an optical bistability between two hyperfine ground states of the atoms.

What is a physical subsystem? How classical physical subsystems localized in spacetime (causally independent) are identified from quantum ones?

In this talk we give a basic overview of the rich mathematical theory of redundant representations, i.e. frame theory, and its connection to disciplines outside mathematics (mentioned in the title).

Doubly-clamped nanostring resonators excel as high Q nanomechanical systems enabling room temperature quality factors of several 100,000 in the 10 MHz eigenfrequency range. Dielectric transduction via electrically induced gradient fields provides an…

No-go theorems (Bell, Kochen–Specker, …) formally show the departure of quantum theory from the classical worldview. These are formulated in the framework of ontological models and, if one accepts such framework, entail that quantum theory involves…

Mechanical resonators are great platform to explore mesoscopic physics of vibrations (phonons) in nonequilibrium and nonlinear regime.