Nontrivial topology in lattices is characterized by invariants—such as the Zak phase for one-dimensional (1D) lattices—derived from wave functions covering the Brillouin zone. We realize the 1D bipartite Rice-Mele (RM) lattice using ultracold 87Rb and focus on lattice configurations possessing …

Dynamically Induced Symmetry Breaking and Out-of-Equilibrium Topology in a 1D Quantum System Read more »

Most data in cold-atom experiments comes from images, the analysis of which is limited by our preconceptions of the patterns that could be present in the data. We focus on the well-defined case of detecting dark solitons—appearing as local density …

Machine-learning enhanced dark soliton detection in Bose–Einstein condensates Read more »

Established techniques for deterministically creating dark solitons in repulsively interacting atomic Bose-Einstein condensates (BECs) can only access a narrow range of soliton velocities. Because velocity affects the stability of individual solitons and the properties of soliton-soliton interactions, this technical limitation …

Creating solitons with controllable and near-zero velocity in Bose-Einstein condensates Read more »

We demonstrate partial-transfer absorption imaging as a technique for repeatedly imaging an ultracold atomic ensemble with minimal perturbation. We prepare an atomic cloud in a state that is dark to the imaging light. We then use a microwave pulse to …

Repeated measurements with minimally destructive partial-transfer absorption imaging Read more »

Newly minted Ph.D.,  Dr. Lauren M. Aycock has been award the 2017-2018 APS Congressional Science Fellowship! She will be spending a year working with members of Congress on issues where her experience can support the legislative and political process! Way …

Dr. Lauren M. Aycock awarded the APS Congressional Science Fellowship for 2017-2018 Read more »

Solitons, spatially localized, mobile excitations resulting from an interplay between nonlinearity and dispersion, are ubiquitous in physical systems from water channels and oceans to optical fibers and Bose–Einstein condensates (BECs). From our pulse throbbing at our wrists to rapidly moving …

Brownian motion of solitons in a Bose–Einstein condensate Read more »