Skip to Main content Skip to Navigation
Theses

Interféromètres atomique pour la mesure simultanée de g et son gradient vertical

Abstract : This work focuses on the development of a new generation of cold-atom inertial sensor. Its architecture is based on two independent atomic sources simultaneously interrogated by an interferometric sequence common to both sources. In addition, in order to achieve ultimate measurement performance, our instrument is based on the latest optical methods for atomic manipulation: Bloch oscillations and multi-photon transitions. During my thesis, the instrument has reached a level of development to perform a proof-of-principle operation, allowing to simultaneously measure the gravity acceleration g and its vertical gradient. In particular, we demonstrated a new measurement method that allows to overcome not only common mode noise, but also the baseline fluctuations of the instrument, for the determination of the gravity gradient. To carry out this work, I also used a prototype of industrial optical bench for space application, developed as part of a project funded by the European Space Agency (ESA) and coordinated by the Muquans company. In parallel with the developments of our instrument, we tested and characterized this fiber bench which fulfills all the optical functionalities necessary for the operation of an atom interferometer in space.
Complete list of metadata

https://tel.archives-ouvertes.fr/tel-03020176
Contributor : Abes Star :  Contact
Submitted on : Monday, November 23, 2020 - 5:24:07 PM
Last modification on : Tuesday, December 8, 2020 - 3:35:50 AM
Long-term archiving on: : Thursday, February 25, 2021 - 1:37:25 PM

File

CALDANI_Romain_2019.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-03020176, version 1

Citation

Romain Caldani. Interféromètres atomique pour la mesure simultanée de g et son gradient vertical. Physique Atomique [physics.atom-ph]. Sorbonne Université, 2019. Français. ⟨NNT : 2019SORUS511⟩. ⟨tel-03020176⟩

Share

Metrics

Record views

136

Files downloads

118