Dear All,
you are cordially invited to the talk by Herwig Ott on "Electron Microscopy of Ultracold Quantum Gases"
The talk will be this Wednesday at 10:15 in SR 0/211
Abstract:
Scanning electron microscopy is routinely used to study solid objects on a nanometer scale. Applied to ultracold quantum gases it constitutes a powerful imaging and manipulation technique that combines single
atom sensitivity with high spatial resolution. We have adapted a scanning electron microscope for the study of Bose-Einstein condensates of rubidium atoms. The focussed electron beam ionizes the atoms
which are subsequently detected. The technique allows for high precision density measurements of the trapped gas with a spatial resolution of better than 150 nm. Loading the condensate in a
two-dimensional optical lattice with 600 nm period we demonstrate single site addressability and show that one can produce arbitrary patterns of occupied lattice sites. Such micro-structured quantum gases
might become a versatile resource for the study of mesoscopic quantum systems and future applications in quantum simulation and quantum information processing. Ultimately, we want to employ this
technique to make snapshots of the many-body wave function and to get in situ access to the quantum correlations of bulk, lattice and low-dimensional quantum systems.
Herwig Ott
Institute for Physics, University of Mainz, Germany
Fachbereich für Physik, Technische Universität Kaiserslautern, Germany
All the best,
Hanns-Christoph Nägerl