Freiburg 2024 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 36: Quantum Metrology and Interference
Q 36.3: Vortrag
Mittwoch, 13. März 2024, 15:00–15:15, HS 3219
All-optical Bose-Einstein condensate generation for microgravity operation — •Janina Hamann1, Jan Simon Haase1, Alexander Fieguth2, Jens Kruse2, Carsten Klempt1, 2, and the INTENTAS Team1 — 1Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover — 2DLR Institut für Satellitengeodäsie und Inertialsensorik, Callinstraße 30b, 30167 Hannover
Atom interferometers are high-precision sensors for amongst others accelerations, rotations and magnetic fields. Space-borne atom interferometers promise a wide range of applications from geodesy to fundamental tests of physics. Their improved sensitivity due to prolonged interrogation times benefits from the macroscopic coherence length and slow expansion rates of Bose-Einstein condensates (BECs). A fundamental limit for the precision of AIs is the Standard Quantum Limit (SQL). The SQL can only be surpassed by using entangled ensembles of atoms in the interferometer. The INTENTAS project is designed as a source of entangled atoms that can be operated on a microgravity platform. To demonstrate sensitivity beyond the SQL rubidium atoms are cooled to a BEC, entangled with each other and detected with high precision. Evaporative cooling of the atoms is performed in a novel, robust crossed-beam optical dipole trap for all-optical BEC generation. In this talk the status of the project will be presented which includes characterization of the atom source on ground and first efforts towards the initial flight.
Keywords: quantum atom optics; microgravity; entanglement; BEC