Matter-wave collimation to picokelvin energies with scattering length and potential shape control
arXiv:2310.04383 · doi:10.1038/s42005-024-01621-w
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 K Bose-Einstein condensate at different scattering lengths. Tailoring interactions, we measure energies corresponding to pK in one direction. Our results are supported by an accurate simulation, which allows us to extrapolate a 2D ballistic expansion energy of pK. Based on our findings we propose an advanced scenario, which enables 3D expansion energies below pK by implementing an additional pulsed delta-kick. Our results pave the way to realize ensembles with more than 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.
References in corpus (24)
- Atom Interferometers
- Measurement of the fine-structure constant as a test of the Standard Model
- Precision Measurement of the Newtonian Gravitational Constant Using Cold Atoms
- Interferometry with Bose-Einstein Condensates in Microgravity
- 6-axis inertial sensor using cold-atom interferometry
- Quantum Test of the Universality of Free Fall
- Limits to the sensitivity of a low noise compact atomic gravimeter
- 39-K Bose-Einstein condensate with tunable interactions
- Matter wave lensing to picokelvin temperatures
- Feshbach resonances in ultracold K(39)
- An Atomic Gravitational Wave Interferometric Sensor in Low Earth Orbit (AGIS-LEO)
- Present status and future challenges of non-interferometric tests of collapse models
- Spin gradient demagnetization cooling of ultracold atoms
- The effect of wavefront aberrations in atom interferometry
- Optimized production of a cesium Bose-Einstein condensate
- A space-based quantum gas laboratory at picokelvin energy scales
- Ultralight dark matter searches at the sub-Hz frontier with atom multigradiometry
- Atom Interferometer Tests of Dark Matter
- Focusing a fountain of neutral cesium atoms with an electrostatic lens triplet
- All-Optical Matter-Wave Lens using Time-Averaged Potentials
- A high-flux source system for matter-wave interferometry exploiting tunable interactions
- Interferometry in an Atomic Fountain with Ytterbium Bose-Einstein Condensates
- Rapid generation of all-optical K Bose-Einstein condensates using a low-field Feshbach resonance
- Multimode Trapped Interferometer with Ideal Bose-Einstein Condensates