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QUEST (Cluster of Excellence)
The Cluster of Excellence QUEST - Centre for Quantum Engineering and Space-Time Research has been funded since November 2007 in the framework of the German Universities Excellence Initiative of the federal and state governments of Germany.〔German Research Foundation: ''(List of current Clusters of Excellence. Project details EXC 201: QUEST. )''. Called: 08|19|2011. Effective: 08|18|2011.〕 The key research areas of the cluster are the quantum engineering and the space-time research. The Cluster of Excellence is with scientists from the fields of quantum optics, laser physics, solid state physics, gravitational physics, theoretical physics and geodesy interdisciplinary orientated. Involved are institutes of Leibniz Universität Hannover and several partner institutions. Speaker of the Excellence Cluster is Wolfgang Ertmer, Deputy Spokesman is Karsten Danzmann.
== Research ==
In the cluster quantum effects for the production of new measurement technologies are being explored. It is working on new concepts that should improve accuracy by targeted use of these quantum effects . Examples are stable and accurate laser systems, tailored optical technologies, special forms of light (squeezed light) and atom interferometers. These technologies are among others used directly in the GEO 600 gravitational wave detector to increase sensitivity. In addition, the technology is also suitable for use in surveying projects, such as for future gravity field satellite missions.
The cluster is involved in the development and production of stable and highly accurate (optical) clocks, in particular of portable clocks for the use in space. These clocks are required for applications in precision geodesy such as the GNSS (Global Navigation Satellite System) and for highly accurate measurements of Earth's gravity.
The newly developed technologies should be used for measurements, which shall answer the fundamental questions of theoretical physics of time and space. More specifically, it is about - among other things - the connection between quantum mechanics and gravitation, the test of whether the fundamental constants really constant, and the processes of the creation of the universe.
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