Details
| Original language | English |
|---|---|
| Number of pages | 9 |
| Journal | Physical Review X |
| Volume | 15 |
| Issue number | 1 |
| Early online date | 11 Feb 2025 |
| Publication status | Published - Mar 2025 |
Abstract
Keywords
- quant-ph, physics.atom-ph
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Physical Review X, Vol. 15, No. 1, 03.2025.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Entanglement-Enhanced Atomic Gravimeter
AU - Cassens, Christophe
AU - Meyer-Hoppe, Bernd
AU - Rasel, Ernst
AU - Klempt, Carsten
PY - 2025/3
Y1 - 2025/3
N2 - 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.
AB - 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.
KW - quant-ph
KW - physics.atom-ph
U2 - 10.1103/PhysRevX.15.011029
DO - 10.1103/PhysRevX.15.011029
M3 - Article
VL - 15
JO - Physical Review X
JF - Physical Review X
SN - 2160-3308
IS - 1
ER -