Transportable optical clocks for relativistic geodesy (A03)

• Subject Area: Optics, Quantum Optics and Physics of Atoms, Molecules and Plasmas ; Geodesy, Photogrammetry, Remote Sensing, Geoinformatics, Cartography
• Term: from 2014 to 2019
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 239994235

According to Einstein’s theory of general relativity, clocks in a gravitational potential tick slower than outside. This project uses comparisons of transportable optical clocks separated by 100 km to 1000 km to derive potential differences with a height differences of 10 cm and less more accurately. In this way, classical geodetic measurements can be linked and anchor points are provided to stabilize height networks. After first successful campaigns, we will now target measurements of geodetic relevance.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1128: Relativistic Geodesy and Gravimetry with Quantum Sensors - Modelling, Geo-Metrology and Future Technology (geo-Q)
• Applicant Institution: Gottfried Wilhelm Leibniz Universität Hannover
• Project Heads: Dr.-Ing. Heiner Denker; Privatdozent Dr. Christian Lisdat; Professor Dr. Piet Oliver Schmidt