Details
| Original language | English |
|---|---|
| Article number | 132 |
| Journal | Communications Physics |
| Volume | 7 |
| Issue number | 1 |
| Publication status | Published - 25 Apr 2024 |
Abstract
The sensitivity of atom interferometers depends on their ability to realize long pulse separation times and prevent loss of contrast by limiting the expansion of the atomic ensemble within the interferometer beam through matter-wave collimation. Here we investigate the impact of atomic interactions on collimation by applying a lensing protocol to a 39K Bose-Einstein condensate at different scattering lengths. Tailoring interactions, we measure energies corresponding to (340 ± 12) pK in one direction. Our results are supported by an accurate simulation, which allows us to extrapolate a 2D ballistic expansion energy of (438 ± 77) pK. Based on our findings we propose an advanced scenario, which enables 3D expansion energies below 16 pK by implementing an additional pulsed delta-kick. Our results pave the way to realize ensembles with more than 1 × 10 5 atoms and 3D energies in the two-digit pK range in typical dipole trap setups without the need for micro-gravity or long baseline environments.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Communications Physics, Vol. 7, No. 1, 132, 25.04.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Matter-wave collimation to picokelvin energies with scattering length and potential shape control
AU - Herbst, Alexander
AU - Estrampes, Timothé
AU - Albers, Henning
AU - Corgier, Robin
AU - Stolzenberg, Knut
AU - Bode, Sebastian
AU - Charron, Eric
AU - Rasel, Ernst m.
AU - Gaaloul, Naceur
AU - Schlippert, Dennis
N1 - Publisher Copyright: © The Author(s) 2024.
PY - 2024/4/25
Y1 - 2024/4/25
N2 - The sensitivity of atom interferometers depends on their ability to realize long pulse separation times and prevent loss of contrast by limiting the expansion of the atomic ensemble within the interferometer beam through matter-wave collimation. Here we investigate the impact of atomic interactions on collimation by applying a lensing protocol to a 39K Bose-Einstein condensate at different scattering lengths. Tailoring interactions, we measure energies corresponding to (340 ± 12) pK in one direction. Our results are supported by an accurate simulation, which allows us to extrapolate a 2D ballistic expansion energy of (438 ± 77) pK. Based on our findings we propose an advanced scenario, which enables 3D expansion energies below 16 pK by implementing an additional pulsed delta-kick. Our results pave the way to realize ensembles with more than 1 × 10 5 atoms and 3D energies in the two-digit pK range in typical dipole trap setups without the need for micro-gravity or long baseline environments.
AB - The sensitivity of atom interferometers depends on their ability to realize long pulse separation times and prevent loss of contrast by limiting the expansion of the atomic ensemble within the interferometer beam through matter-wave collimation. Here we investigate the impact of atomic interactions on collimation by applying a lensing protocol to a 39K Bose-Einstein condensate at different scattering lengths. Tailoring interactions, we measure energies corresponding to (340 ± 12) pK in one direction. Our results are supported by an accurate simulation, which allows us to extrapolate a 2D ballistic expansion energy of (438 ± 77) pK. Based on our findings we propose an advanced scenario, which enables 3D expansion energies below 16 pK by implementing an additional pulsed delta-kick. Our results pave the way to realize ensembles with more than 1 × 10 5 atoms and 3D energies in the two-digit pK range in typical dipole trap setups without the need for micro-gravity or long baseline environments.
UR - http://www.scopus.com/inward/record.url?scp=85191328357&partnerID=8YFLogxK
U2 - 10.1038/s42005-024-01621-w
DO - 10.1038/s42005-024-01621-w
M3 - Article
VL - 7
JO - Communications Physics
JF - Communications Physics
SN - 2399-3650
IS - 1
M1 - 132
ER -