Freiburg 2024 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 45: Quantum Metrology for Fundamental Physics
Q 45.1: Invited Talk
Thursday, March 14, 2024, 11:00–11:30, HS 1221
Quantum Sensing in Space for Fundamental Physics and Applications — •Naceur Gaaloul — Leibniz University of Hanover, Institute of Quantum Optics, Hanover, Germany
Space-borne quantum technologies, particularly those based on atom interferometry, are heralding a new era of strategic and robust space exploration. The unique conditions of space, characterized by low-noise and low-gravity environments, open up diverse possibilities for applications ranging from precise time and frequency transfer to Earth Observation and the search of new Physics.
This contribution focuses on recent mission concepts utilizing quantum-gas sensors. The first mission, Space-Time Explorer and Quantum Equivalence Principle Space Test (STE-QUEST), introduces a dual-species atom interferometer operating over extended durations. This mission aims to tackle fundamental questions in Physics, such as testing the universality of free fall with unprecedented accuracy (better than one part in 10−17), exploring various forms of Ultra-Light Dark Matter, and scrutinizing the foundations of Quantum Mechanics.
The second satellite mission is the CARIOQA pathfinder, recently endorsed by the European Commission. It is set to lay the groundwork for a space Geodesy mission, utilizing atom accelerometers to map temporal variations in Earth’s gravity field.
To conclude, this presentation offers an overview of recent experimental results from orbital quantum laboratories, highlighting the cutting-edge advancements in the field of space-based quantum technologies.
Keywords: cold atoms; quantum sensing; atom interferometry; microgravity and space; fundamental physics