SCL Seminar by Patrick Boegel

You are cordially invited to the SCL seminar of the Center for the Study of Complex Systems, which will be held on Thursday, 28 November 2019 at 14:00 in the library reading room “Dr. Dragan Popović" of the Institute of Physics Belgrade. The talk entitled

Self-focusing of interacting matter waves

will be given by Patrick Boegel (Institute for Quantum Physics, University of Ulm, Germany). Abstract of the talk:

A common 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 [1,2], based on diffractive focusing, where the initial wave function is real-valued with a non-Gaussian shape. Hence, the optimal focusing relies on a smart choice of this initial wave function [3]. In this talk, we will discuss the phenomenon of diffractive focusing of an atomic Bose-Einstein condensate in the regime where the resonant atom-atom interaction plays a key role, and describe this effect in phase space within the Wigner function approach.
[1] W. B. Case, et al., Optics Express 20, 27253 (2012).
[2] D. Weisman et al., Phys. Rev. Lett. 118, 154301 (2017).
[3] K. Vogel, et al., Chem. Phys. 375, 133 (2010).

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