Diffractive focusing of a uniform Bose-Einstein condensate

ORAL

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 [1,2], based on diffractive focusing, where the initial wave function is a real-valued one with a non-Gaussian shape. Hence, the problem of optimal focusing translates into finding an appropriate initial wave function [3].

We explore the phenomenon of diffractive focusing of an atomic Bose-Einstein condensate in the regime, where the atom-atom interaction plays a key role [4]. We furthermore extend this approach by using attractive interaction to obtain a non-expanding condensate confined solely by its own interaction potential.

 

 




 

*This project is supported by the German Space Agency (DLR) with funds provided by the Federal Ministry for Economic Affairs and Energy (BMWi) under the grant numbers 50WP1705, 50WM1862 and 50WM1861

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Publication: [1] Case, W.B. et al. Optics Express 20, 27253 (2012)
[2] Weisman D. et al. Phys. Rev. Lett. 118, 154301 (2017)
[3] Vogel, K. et al., Chem. Phys. 375, 133-143 (2010)
[4] Boegel, P. et al., arXiv:2102.08682 (2021)

Presenters

  • Patrick B Boegel

    • Institut für Quantenphysik, Ulm University, Ulm, Germany
    • Institut für Quantenphysik and Center for Integrated Quantum Science and Technology (IQST), Universität Ulm, Ulm, Germany

Authors

  • Patrick B Boegel

    • Institut für Quantenphysik, Ulm University, Ulm, Germany
    • Institut für Quantenphysik and Center for Integrated Quantum Science and Technology (IQST), Universität Ulm, Ulm, Germany

  • Matthias Meister

    • Institut für Quantentechnologien, German Aerospace Center (DLR), Ulm, Germany
    • Institute of Quantum Technologies, German Aerospace Center (DLR), Ulm, Germany
    • Institut für Quantentechnologien, Deutsches Zentrum für Luft- und Raumfahrt (DLR), Ulm, Germany
    • Institute of Quantum Technologies, German Aerospace Center

  • Jan-Niclas Siemß

    • Institut für Theoretische Physik, Leibniz Universität Hannover, Appelstraße 2, Hannover, Deutschland
    • Institut für Quantenoptik, Leibniz University Hannover, Hannover, Germany

  • Naceur Gaaloul

    • Leibniz University Hannover, Institute of Quantum Optics
    • Univ Hannover
    • Institut für Quantenoptik, Leibniz University Hannover, Hannover, Germany
    • Leibniz University Hannover
    • Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, D-30167 Hannover, Germany

  • Maxim Efremov

    • Institut für Quantentechnologien, German Aerospace Center (DLR), Ulm, Germany
    • Institute of Quantum Technologies, German Aerospace Center (DLR), D-89069 Ulm, Germany
    • Institute of Quantum Technologies, German Aerospace Center (DLR), D-89077 Ulm, Germany

  • Wolfgang P Schleich

    • Institut für Quantenphysik and Center for Integrated Quantum Science and Technology (IQST), Universität Ulm, D-89069 Ulm, Germany