Atom spin gyroscope based on Rb-Xe vapor cell.

Rémi Geiger, Matteo Altorio, Romain Gautier +2 more

Sylvain Karlen, Gilles Buchs, Thomas Overstolz +4 more

MEMS cells filled with Rb and Xe atoms have been fabricated at CSEM for microgyroscope applications. Characterization of spin-polarized pumping efficiency and of the relaxation times of the Xe nuclear spins as a function of cell size and temperature will be presented and discussed, as well as preliminary results on a gyroscope configuration using non collinear pump and probe beams.

Sang Hyuk Hong, Sin Hyuk Yim, Taek Jeong +2 more

We describe the fabrication of a cubic Rb–Xe gas cell integrated with optical components. Two prism mirrors and a reflection mirror are attached to the Rb–Xe gas cell by optical contact bonding. This concept was studied by using free induction decay measurements of Xe gas with two diode lasers at 795 nm in a magnetic shield. The transverse spin relaxation times of 129 Xe and 131 Xe are 7.0 s and 7.2 s, respectively, with sufficient signal amplitude. Optical contact bonding is shown to be promising to provide the monolithic atomic gas cell with optical components and the compact design of an atom spin gyroscope.

Arnaud Landragin

Mingzhi Yu, Yanbin Wang, Yintao Ma +7 more

High Resolution Image Download MS PowerPoint Slide Research on the electric quadrupole frequency shift mechanism and nuclear spin relaxation of 129 Xe– 131 Xe in alkali metal atomic vapor cells fabricated using microelectromechanical systems (MEMS) technology remains in its early stages. Therefore, an in-depth investigation in this field is crucial for enhancing the performance of miniaturized atomic gyroscopes and other quantum devices. This study provides a comprehensive analysis of the electric quadrupole frequency shift and relaxation of 129 Xe– 131 Xe nuclear spins in a stemless cubic MEMS vapor cell. To elucidate the microscopic characteristics of wall interactions, nuclear spin quadrupole interactions with mixed silicon and glass surfaces in MEMS vapor cells were examined. The influence of the angle between the vapor cell’s geometric axis and the applied magnetic field on the electric quadrupole frequency shift was investigated, leading to the determination of the vapor cell’s asymmetry parameter η and the average twist angle ⟨ θ ⟩ of nuclear spin-wall collisions. Furthermore, the temperature dependence of the electric quadrupole frequency shift in 131 Xe atoms was characterized, enabling the extraction of the desorption activation energy ( E A ) of 131 Xe on the MEMS vapor cell surface. By analyzing the free induction decay (FID) signals of 129 Xe and 131 Xe at varying temperatures, the relationship between their relaxation rates and temperature was established. These findings offer valuable insights for optimizing nuclear spin relaxation times in microatomic gyroscopes.

Florence Leduc, David Holleville, J. Fils +5 more