31 citations · 114 across the 8 of their papers we have counts for
8 papers
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…
Laser frequency stabilization using a transfer interferometer
Shira Jackson, Hiromitsu Sawaoka, Nishant Bhatt +2
We present a laser frequency stabilization system that uses a transfer interferometer to stabilize slave lasers to a reference laser. Our implementation uses off-the-shelf optical…
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…
Broadband low-noise photodetector for Pound-Drever-Hall laser stabilization
Shreyas Potnis, Amar C. Vutha
The Pound-Drever-Hall laser stabilization technique requires a fast, low-noise photodetector. We present a simple photodetector design that uses a transformer as an intermediary be…
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…
Macroscopic coherence between quantum condensates formed at different times
Alex Hayat, Christoph Lange, Lee A. Rozema +8
We demonstrate macroscopic coherence between quantum condensates generated at different times, separated by more than the particle dephasing time. This is possible due to the dress…
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…
Observation of Transient Momentum-Space Interference During Scattering of a Condensate From an Optical Barrier
Rockson Chang, Shreyas Potnis, Christopher W. Ellenor +3
Scattering theory traditionally deals with the asymptotic behaviour of a system far removed from the actual scattering event. Here we present an experimental study of the one-dimen…