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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…
Short-pulse cross-phase modulation in an electromagnetically-induced-transparency medium
Amir Feizpour, Greg Dmochowski, Aephraim M. Steinberg
Electromagnetically-induced transparency (EIT) has been proposed as a way to greatly enhance cross-phase modulation, with the possibility of leading to few-photon-level optical non…