Details
| Original language | English |
|---|---|
| Article number | 34 |
| Journal | EPJ Quantum Technology |
| Volume | 12 |
| Issue number | 1 |
| Publication status | Published - 12 Mar 2025 |
Abstract
Atom interferometers are employed for numerous purposes such as inertial sensing. They measure forces by encoding their signal in phase shifts between matter waves. Signal extraction algorithms typically require the resulting interference patterns to feature a priori known spatial distributions of intensity and phase. Deviations from these assumed spatial distributions, such as those caused by inhomogeneous laser wave fronts, can lead to systematic errors. For long interrogation times, such as for space operation, these distributions can display highly complex structures. We present an extraction algorithm designed for interference patterns featuring arbitrary and unknown temporally stable spatial phase profiles utilizing Principal Component Analysis. It characterizes complex phase profiles and thereby turns effects into a measured quantity which caused systematic errors in previous algorithms. We verify the algorithm’s accuracy and assess the statistical reconstruction error in the presence of atom projection noise as a function of the number of atoms and images. Finally, we extract the spatial phase profiles from experimental data obtained by an atom gravimeter.
Keywords
- Atom interferometry, Phase reconstruction, Phase shifting interferometry, Wavefront aberrations
ASJC Scopus subject areas
- Engineering(all)
- Control and Systems Engineering
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Electrical and Electronic Engineering
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In: EPJ Quantum Technology, Vol. 12, No. 1, 34, 12.03.2025.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Spatially resolved phase reconstruction for atom interferometry
AU - Seckmeyer, Stefan
AU - Ahlers, Holger
AU - Kirsten-Siemß, Jan Niclas
AU - Gersemann, Matthias
AU - Rasel, Ernst M.
AU - Abend, Sven
AU - Gaaloul, Naceur
N1 - Publisher Copyright: © The Author(s) 2025.
PY - 2025/3/12
Y1 - 2025/3/12
N2 - Atom interferometers are employed for numerous purposes such as inertial sensing. They measure forces by encoding their signal in phase shifts between matter waves. Signal extraction algorithms typically require the resulting interference patterns to feature a priori known spatial distributions of intensity and phase. Deviations from these assumed spatial distributions, such as those caused by inhomogeneous laser wave fronts, can lead to systematic errors. For long interrogation times, such as for space operation, these distributions can display highly complex structures. We present an extraction algorithm designed for interference patterns featuring arbitrary and unknown temporally stable spatial phase profiles utilizing Principal Component Analysis. It characterizes complex phase profiles and thereby turns effects into a measured quantity which caused systematic errors in previous algorithms. We verify the algorithm’s accuracy and assess the statistical reconstruction error in the presence of atom projection noise as a function of the number of atoms and images. Finally, we extract the spatial phase profiles from experimental data obtained by an atom gravimeter.
AB - Atom interferometers are employed for numerous purposes such as inertial sensing. They measure forces by encoding their signal in phase shifts between matter waves. Signal extraction algorithms typically require the resulting interference patterns to feature a priori known spatial distributions of intensity and phase. Deviations from these assumed spatial distributions, such as those caused by inhomogeneous laser wave fronts, can lead to systematic errors. For long interrogation times, such as for space operation, these distributions can display highly complex structures. We present an extraction algorithm designed for interference patterns featuring arbitrary and unknown temporally stable spatial phase profiles utilizing Principal Component Analysis. It characterizes complex phase profiles and thereby turns effects into a measured quantity which caused systematic errors in previous algorithms. We verify the algorithm’s accuracy and assess the statistical reconstruction error in the presence of atom projection noise as a function of the number of atoms and images. Finally, we extract the spatial phase profiles from experimental data obtained by an atom gravimeter.
KW - Atom interferometry
KW - Phase reconstruction
KW - Phase shifting interferometry
KW - Wavefront aberrations
UR - http://www.scopus.com/inward/record.url?scp=105000034149&partnerID=8YFLogxK
U2 - 10.1140/epjqt/s40507-025-00337-2
DO - 10.1140/epjqt/s40507-025-00337-2
M3 - Article
AN - SCOPUS:105000034149
VL - 12
JO - EPJ Quantum Technology
JF - EPJ Quantum Technology
IS - 1
M1 - 34
ER -