84 citations · 186 across the 6 of their papers we have counts for
6 papers
Realizing a 1D topological gauge theory in an optically dressed BEC
Anika Frölian, Craig S. Chisholm, Elettra Neri +4
Topological gauge theories describe the low-energy properties of certain strongly correlated quantum systems through effective weakly interacting models. A prime example is the Che…
Measuring the time a tunnelling atom spends in the barrier
Ramón Ramos, David Spierings, Isabelle Racicot +1
Tunnelling is one of the most paradigmatic and evocative phenomena of quantum physics, underlying processes such as photosynthesis and nuclear fusion, as well as devices ranging fr…
Atom-optics knife-edge: Measuring narrow momentum distributions
Ramón Ramos, David Spierings, Shreyas Potnis +1
By employing the equivalent of a knife-edge measurement for matter-waves, we are able to characterize ultra-low momentum widths. We measure a momentum width corresponding to an eff…
Macroscopic Quantum Tunneling Escape of Bose-Einstein Condensates
Xinxin Zhao, Diego A. Alcala, Marie A. McLain +5
Recent experiments on macroscopic quantum tunneling reveal a non-exponential decay of the number of atoms trapped in a quasibound state behind a potential barrier. Through both exp…
Interaction-assisted quantum tunneling of a Bose-Einstein condensate out of a single trapping well
Shreyas Potnis, Ramon Ramos, Kenji Maeda +2
We experimentally study tunneling of Bose-condensed Rb atoms prepared in a quasi-bound state and observe a non-exponential decay caused by interatomic interactions. A combin…
Observing the Onset of Effective Mass
Rockson Chang, Shreyas Potnis, Ramon Ramos +6
The response of a particle in a periodic potential to an applied force is commonly described by an effective mass which accounts for the detailed interaction between the particle a…