Understanding the gravitational and magnetic environment of a very long baseline atom interferometer

authored by: Ali Lezeik, Dorothee Tell, Klaus Zipfel, Vishu Gupta, Étienne Wodey, Ernst Rasel, Christian Schubert, Dennis Schlippert
Abstract: By utilizing the quadratic dependency of the interferometry phase on time, the Hannover Very Long Baseline Atom Interferometer facility (VLBAI) aims for sub nms−2 gravity measurement sensitivity. With its 10 m vertical baseline, the VLBAI offers promising prospects in testing fundamental physics at the interface between quantum mechanics and general relativity. Here we discuss the challenges imposed by controlling the VLBAI’s magnetic and gravitational environment and report on their effect on the device’s accuracy. Within the inner 8 m of the magnetic shield, residual magnetic field gradients expect to cause a bias acceleration of only 6 × 10−14 ms−2 while we evaluate the bias shift due to the facility’s non-linear gravity gradient to 2.6 nms−2. The model allows the VLBAI facility to be a reference to other mobile devices for calibration purposes with an uncertainty below the 10 nms−2 level.
Organisation(s): QuantumFrontiers
CRC 1227 Designed Quantum States of Matter (DQ-mat)
CRC 1464: Relativistic and Quantum-Based Geodesy (TerraQ)
Institute of Quantum Optics
External Organisation(s): DLR-Institute for Satellite Geodesy and Inertial Sensing
Type: Conference contribution
Pages: 64-68
Publication date: 06.2023
Publication status: Published
Peer reviewed: Yes
Electronic version(s): https://doi.org/10.48550/arXiv.2209.08886 (Access: Open)
https://doi.org/10.1142/9789811275388_0014 (Access: Closed)

BibTeX

@inproceedings{acfc79860e444f20b2ef55e67e0c67d7,
title = "Understanding the gravitational and magnetic environment of a very long baseline atom interferometer",
abstract = "By utilizing the quadratic dependency of the interferometry phase on time, the Hannover Very Long Baseline Atom Interferometer facility (VLBAI) aims for sub nms−2 gravity measurement sensitivity. With its 10 m vertical baseline, the VLBAI offers promising prospects in testing fundamental physics at the interface between quantum mechanics and general relativity. Here we discuss the challenges imposed by controlling the VLBAI{\textquoteright}s magnetic and gravitational environment and report on their effect on the device{\textquoteright}s accuracy. Within the inner 8 m of the magnetic shield, residual magnetic field gradients expect to cause a bias acceleration of only 6 × 10−14 ms−2 while we evaluate the bias shift due to the facility{\textquoteright}s non-linear gravity gradient to 2.6 nms−2. The model allows the VLBAI facility to be a reference to other mobile devices for calibration purposes with an uncertainty below the 10 nms−2 level.",
keywords = "physics.atom-ph, hep-ph",
author = "Ali Lezeik and Dorothee Tell and Klaus Zipfel and Vishu Gupta and {\'E}tienne Wodey and Ernst Rasel and Christian Schubert and Dennis Schlippert",
note = "Funding Information: This work is funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation): Project-ID 274200144 - SFB 1227 DQ-mat (projects B07 and B09), Project-ID 434617780 - SFB 1464 TerraQ (project A02), and Germany{\textquoteright}s Excellence Strategy - EXC-2123 QuantumFrontiers - Project-ID 390837967 - and from “Nieders¨achsisches Vorab” through the “Quantum- and Nano-Metrology (QUANOMET)” initiative within the Project QT3. D.S. acknowledges support by the Federal Ministry of Ed- ucation and Research (BMBF) through the funding program Photonics Research Germany under contract number 13N14875.; Ninth Meeting on CPT and Lorentz Symmetry ; Conference date: 17-05-2022 Through 26-05-2022",
year = "2023",
month = jun,
doi = "10.48550/arXiv.2209.08886",
language = "English",
pages = "64--68",
booktitle = "CPT and Lorentz Symmetry",
publisher = "World Scientific",
address = "United States",
}