SAMOP 2023 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 59: Poster IV

Q 59.14: Poster

Thursday, March 9, 2023, 16:30–19:00, Empore Lichthof

Moving towards high precision classical sensor hybridization with atom interferometers — •Ashwin Rajagopalan, Ernst Rasel, Sven Abend, and Dennis Schlippert — Leibniz Universität Hannover, Institut für Quantenoptik

Vibrational noise is one amongst the most dominant noise sources that hinders the measurement sensitivity of an atom interferometer. Although correlation with commercial accelerometers can be a solution, there are limitations in terms of compatibility, dimensions, sensitivity and correlation efficiency with the atom interferometer. The perspective is to measure the inertial reference mirror motion with utmost precision, which in turn enhances the measurement sensitivity of the atom interferometer. For this purpose, the accelerometer should be placed as close as possible to the mirror or even better if fully integrated with it. We have already demonstrated using a compact Opto-mechanical resonator directly on the inertial reference mirror to measure its motion and suppress the effects of vibrational noise on a T = 10 ms atom interferometer without any vibration isolation. The next step is to fully integrate the Opto-mechanical motion sensor with the inertial reference mirror such that the same test mass serves as the inertial reference mirror as well as one of the mirrors for the optical interferometer measuring motion. This eradicates the existence of a mechanical transfer function between the mirror and the motion sensor. Funded by the DFG EXC2123 QuantumFrontiers - 390837967 supported by the DLR with funds provided by BMWK under Grant No. DLR 50RK1957 (QGyro) and DLR 50NA2106 (QGyro+).