Interferometric measurement of micro-g acceleration with levitated atoms
arXiv:1905.03586 · doi:10.1088/1367-2630/ab1bbd
Abstract
The sensitivity of atom interferometers is usually limited by the observation time of a free falling cloud of atoms in Earth's gravitational field. Considerable efforts are currently made to increase this observation time, e.g. in fountain experiments, drop towers and in space. In this article, we experimentally study and discuss the use of magnetic levitation for interferometric precision measurements. We employ a Bose-Einstein condensate of cesium atoms with tuneable interaction and a Michelson interferometer scheme for the detection of micro-g acceleration. In addition, we demonstrate observation times of 1s, which are comparable to current drop-tower experiments, we study the curvature of our force field, and we observe the effects of a phase-shifting element in the interferometer paths.
References in corpus (11)
- Atom Interferometers
- Precision Measurement of the Newtonian Gravitational Constant Using Cold Atoms
- New determination of the fine structure constant and test of the quantum electrodynamics
- Interferometry with Bose-Einstein Condensates in Microgravity
- Dual Matter-Wave Inertial Sensors in Weightlessness
- Feshbach resonances, weakly bound molecular states and coupled-channel potentials for cesium at high magnetic fields
- Optimized production of a cesium Bose-Einstein condensate
- A Bose-Einstein condensate interferometer with macroscopic arm separation
- Confinement effects in a guided-wave interferometer with millimeter-scale arm separation
- Measurement of the ac Stark shift with a guided matter-wave interferometer
- Detection of Applied and Ambient Forces with a Matterwave Magnetic-Gradiometer