Within the QuantumFrontiers research program we explore light and matter at the quantum frontier. This means that we exploit quantum metrology and nanometrology to improve sensitivity and precision of measurements, i.e. the foundations of metrology. These advancements in the foundations of metrology enable new precision measurements and measurement technologies that allow us to understand nature better at the smallest and largest scales: from gravitational wave astronomy to light and matter on the quantum level. more...

The long term vision of TerraQ is to create a new geodesy based on quantum physics and general relativity, enabling unique prospects for satellite geodesy, gravimetric Earth observation and reference systems.more...

The goal of this research unit is the development of a new method for a highly accurate long- term stable realization of Geodetic Reference Systems by linking all space geodetic observation techniques to a common time system. Global reference frames are the metrological basis for a multitude of applications reaching from positioning, terrestrial and space navigation, to the quantification of change processes in the system Earth. Highest accuracy and long-term stability of the reference frame are of paramount importance for the identification of long-lasting geodynamic or climate-related processes, such as plate tectonics or sea level change. more...

Recent advances in both high-energy astrophysics and high-precision table-top experiments are pushing our capability to test nature in regimes where gravity meets quantum physics. Astrophysical observations are now potentially sensitive to tiny residual effects of Planck-scale physics, while table-top experiments are reaching the precision needed to test the interplay between gravity and quantum systems at ultra-low energies.

The main aim of this COST Action Netowrk is to bring together scientists with a variety of complementary expertise: theorists working on quantum gravity or the interplay between gravity and quantum physics with quantum information and quantum optics tools, and experimentalists involved in astrophysical searches for quantum gravity, or investigating the effects of gravitational interactions on quantum systems.more...

The propagation of particles and fields in media and on quantum spacetimes can be described by energy-momentum dependent background and spacetime geometries. They emerge from the interaction between the particles and fields with the constituents of the medium or with quantum gravity. The goal of this project is to establish a rigorous mathematical description of curved momentum dependent spacetime geometries, in terms of Finsler and Hamilton geometry, or extension of these frameworks. Moreover, the aim is to rigorously derive observable predictions, like trajectories of point particles, time delays, and light deflections; to study the propagation of classical and quantum fields and to find dynamical equations which determine the energy-momentum dependent geometry of spacetime from its matter content, which extend the Einstein equations.
more...