Freiburg 2024 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 56: Poster VII
Q 56.14: Poster
Donnerstag, 14. März 2024, 17:00–19:00, KG I Foyer
Operating an atom interferometer in a vibrationally noisy environment — •Ashwin Rajagopalan, Ernst M. Rasel, Sven Abend, and Dennis Schlippert — Leibniz Universität Hannover, Institut für Quantenoptik,
Welfengarten 1, 30167 Hannover, Germany
Quantum inertial sensing with atom interferometry is a promising tool for reliable and long term stable measurements of inertial effects. Due to its limited dynamic range and reciprocal response the challenge lies in being able to operate an atom interferometer (AI) in a high vibrational noise environment. We have demonstrated operating a T = 10 ms AI without any vibration isolation with the help of a compact opto-mechanical accelerometer. The accelerometer signal was used to suppress the effects of ambient ground vibrational noise coupling into our AI. The coupled noise with a Gaussian full width half maximum of 3.2 mm/s2 obscures the AI fringes. With our approach, we were not only able to resolve AI fringes and remove measurement ambiguity, but could also measure at a level which is 8 times more sensitive than the ambient vibrational noise that the AI experiences. The new improved version of the opto-mechanical accelerometer has the potential for high precision AI and accelerometer correlation as they share the same inertial reference. We report on the preliminary results and discuss prospects for AI hybridization suitable for dynamic environments.
Funded by the DFG EXC2123 QuantumFrontiers - 390837967 supported by the DLR with funds provided by BMWK under Grant No. DLR 50NA2106 (QGyro+) and DFG SFB 1464 TerraQ.