An entanglement-enhanced atomic gravimeter

verfasst von

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.

Organisationseinheit(en)

Institut für Quantenoptik

Externe Organisation(en)

DLR-Institut für Satellitengeodäsie und Inertialsensorik

Typ

Preprint

Anzahl der Seiten

9

Publikationsdatum

29.04.2024

Publikationsstatus

Elektronisch veröffentlicht (E-Pub)

Elektronische Version(en)

https://doi.org/10.48550/arXiv.2404.18668 (Zugang: Offen)