Quantum optics seminar
Diffractive focusing of a uniform Bose-Einstein condensate
Dr. Maxim Efremov
University Of Ulm
Abstract
Zoom link: https://us02web.zoom.us/j/81179184492
Abstract: The standard way to control the position and the strength of maximal focusing of a
matter-wave is to use a lens which imprints a position-dependent phase on the initial
wave. However, quantum mechanics allows focusing even without a lens, based
on diffractive focusing, where the initial wave function is a real-valued one with a non-Gaussian shape. We propose a straightforward implementation of the phenomenon of diffractive focusing with uniform atomic Bose-Einstein condensates. Both, analytical as well as numerical methods not only illustrate the influence of the atom-atom interaction on the focusing factor and the focus time, but also allow us to derive the optimal conditions for observing focusing of this type in the case of interacting matter waves.
Abstract: The standard way to control the position and the strength of maximal focusing of a
matter-wave is to use a lens which imprints a position-dependent phase on the initial
wave. However, quantum mechanics allows focusing even without a lens, based
on diffractive focusing, where the initial wave function is a real-valued one with a non-Gaussian shape. We propose a straightforward implementation of the phenomenon of diffractive focusing with uniform atomic Bose-Einstein condensates. Both, analytical as well as numerical methods not only illustrate the influence of the atom-atom interaction on the focusing factor and the focus time, but also allow us to derive the optimal conditions for observing focusing of this type in the case of interacting matter waves.