Journal
PHYSICAL REVIEW LETTERS
Volume 125, Issue 21, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.125.213201
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Funding
- Ville de Paris
- FIRST-TF [ANR-10-LABX-48-01]
- Centre National d'Etudes Saptiales (CNES), Sorbonne Universite [SU-16-R-EMR-30]
- Agence Nationale pour la Recherche [ANR-18-CE47-0002-01]
- Conseil Scientifique de l'Observatoire de Paris (PSL fellowship in astrophysics at Paris Observatory)
- Agence Nationale de la Recherche (ANR) [ANR-18-CE47-0002] Funding Source: Agence Nationale de la Recherche (ANR)
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Multiloop matter-wave interferometers arc essential in quantum sensing to measure the derivatives of physical quantities in time or space. Because multiloop interferometers require multiple reflections, imperfections of the matter-wave mirrors create spurious paths that scramble the signal of interest. Here, we demonstrate a method of adjustable momentum transfer that prevents the recombination of the spurious paths in a double-loop atom interferometer aimed at measuring rotation rates. We experimentally study the recombination condition of the spurious matter waves, which is quantitatively supported by a model accounting for the coherence properties of the atomic source. We finally demonstrate the effectiveness of the method in building a cold-atom gyroscope with a single-shot acceleration sensitivity suppressed by a factor of at least 50. Our study will impact the design of multiloop atom interferometers that measure a single inertial quantity.
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