An entanglement-enhanced atomic gravimeter
- authored by
- Christophe Cassens, Bernd Meyer-Hoppe, Ernst Rasel, Carsten Klempt
- Abstract
Interferometers based on ultra-cold atoms enable an absolute measurement of inertial forces with unprecedented precision. However, their resolution is fundamentally restricted by quantum fluctuations. Improved resolutions with entangled or squeezed atoms were demonstrated in internal-state measurements for thermal and quantum-degenerate atoms and, recently, for momentum-state interferometers with laser-cooled atoms. Here, we present a gravimeter based on Bose-Einstein condensates with a sensitivity of $-1.7^{+0.4}_{-0.5}\,$dB beyond the standard quantum limit. Interferometry with Bose-Einstein condensates combined with delta-kick collimation minimizes atom loss in and improves scalability of the interferometer to very-long baseline atom interferometers.
- Organisation(s)
-
Institute of Quantum Optics
- External Organisation(s)
-
DLR-Institute for Satellite Geodesy and Inertial Sensing
- Type
- Preprint
- No. of pages
- 9
- Publication date
- 29.04.2024
- Publication status
- E-pub ahead of print
- Electronic version(s)
-
https://doi.org/10.48550/arXiv.2404.18668 (Access:
Open)
