Description
Resonantly enhanced and controllable p-wave interactions in ultracold atomic systems are a promising test bed for realizing unconventional superconductors and superfluids with non-trivial transport properties. However, p-wave and other antisymmetric interactions are weak in naturally occurring systems, and their enhancement via the Feshbach mechanism has been limited by three-body loss. Here, we report on spectroscopic measurements of Feshbach-enhanced p-wave interactions of $^{40}$K, where three-body loss is suppressed by loading pairs of spin polarized atoms into a multi-band 3D optical lattice. Our measurements extend up to the unitary limit characterized by a diverging p-wave scattering volume. These measurements show excellent agreements to an exact solution for two harmonically confined atoms interacting via a p-wave pseudopotential, and to numerical solutions using an ab-initio interaction potential. We also demonstrate the coherence of the conversion process between non-interacting and strongly interacting atomic pairs by measuring Rabi oscillations. Furthermore, we demonstrate that losses of p-wave interacting pairs are limited by the intrinsic lifetime of the free-space molecular dimer, and we observe lifetimes that are fifty times larger than previous measurements in $^{40}$K.
| Presenter name | Vijin Venu |
|---|---|
| How will you attend ICAP-27? | I am planning on in-person attendance |
