High-flux source system for matter-wave interferometry exploiting tunable interactions
- authored by
- A. Herbst, T. Estrampes, H. Albers, V. Vollenkemper, K. Stolzenberg, S. Bode, E. Charron, E. M. Rasel, N. Gaaloul, D. Schlippert
- Abstract
Atom interferometers allow determining inertial effects to high accuracy. Quantum-projection noise as well as systematic effects impose demands on large atomic flux as well as ultralow expansion rates. Here we report on a high-flux source of ultracold atoms with free expansion rates near the Heisenberg limit directly upon release from the trap. Our results are achieved in a time-averaged optical dipole trap and enabled through dynamic tuning of the atomic scattering length across two orders of magnitude interaction strength via magnetic Feshbach resonances. We demonstrate Bose-Einstein condensates with more than 6×104 particles after evaporative cooling for 170 ms and their subsequent release with a minimal expansion energy of 4.5 nK in one direction. Based on our results we estimate the performance of an atom interferometer and compare our source system to a high performance chip trap, as readily available for ultraprecise measurements in microgravity environments.
- Organisation(s)
-
CRC 1227 Designed Quantum States of Matter (DQ-mat)
Institute of Quantum Optics
Quantum Sensing
Guided Matter Wave Interferometry
Laboratory of Nano and Quantum Engineering
QUEST-Leibniz Research School
QuantumFrontiers
- External Organisation(s)
-
Université Paris-Saclay
- Type
- Article
- Journal
- Physical Review Research
- Volume
- 6
- ISSN
- 2643-1564
- Publication date
- 02.02.2024
- Publication status
- Published
- Peer reviewed
- Yes
- ASJC Scopus subject areas
- General Physics and Astronomy
- Electronic version(s)
-
https://doi.org/10.1103/physrevresearch.6.013139 (Access:
Open)