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: Physics and Astronomy(all)
Electronic version(s): https://doi.org/10.1103/physrevresearch.6.013139 (Access: Open)

BibTeX

@article{445a4d7e99d54ae2b22cff6df7543af4,
title = "High-flux source system for matter-wave interferometry exploiting tunable interactions",
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.",
author = "A. Herbst and T. Estrampes and H. Albers and V. Vollenkemper and K. Stolzenberg and S. Bode and E. Charron and Rasel, {E. M.} and N. Gaaloul and D. Schlippert",
year = "2024",
month = feb,
day = "2",
doi = "10.1103/physrevresearch.6.013139",
language = "English",
volume = "6",
journal = "Physical Review Research",
issn = "2643-1564",
publisher = "American Physical Society",
number = "1",
}