Freiburg 2024 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 55: Poster VI
Q 55.8: Poster
Thursday, March 14, 2024, 17:00–19:00, Tent B
Chip-Scale Quantum Gravimeter — •Julian Lemburg1, Hendrik Heine1, Joseph Muchovo1, Aaditya Mishra1, Kai-Christian Bruns1, Ernst M. Rasel1, Waldemar Herr1,2, and Christian Schubert1,2 — 1Leibniz Universität Hannover, Institut für Quantenoptik — 2Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Satellitengeodäsie und Inertialsensorik (SI)
Atom interferometry with Bose-Einstein condensates enables very precise measurements of gravity with residual uncertainties on the order of nm/s2. A low size, weight, and power consumption are essential for potential applications like ground or space-borne geodesy. This challenge can be tackled by using atom chips as they offer the desired magnetic fields at low power. Additionally, the atom chip can be equipped with a grating to facilitate the creation of a magneto-optical trap with a single beam or with a mirror for Raman interferometry.
In this poster, we will present a concept for a novel atom chip that combines the features of the grating and the mirror, that allows us to reduce the sensor head to shoe-box size. With this novel atom chip and an additional relaunch scheme an innovative single-beam quantum gravimeter is envisaged. Through the miniaturization and reduction of complexity of the sensor head, the transportability and usability of the quantum gravimeter are enhanced and ease in-field operations.
This work is funded by the German Research Foundation (DFG) in the CRC 1464 "TerraQ" (Project A03) and under Germany’s Excellence Strategy (EXC 2123) "QuantumFrontiers".
Keywords: Atom Chips; Nanostructured Surfaces; Atom Interferometry; Gravimetry