Collisions and scattering in ultracold atomic clouds

ORAL

Abstract

This presentation describes a combined experimental and theoretical study of quantum mechanical scattering between atoms in a dilute-gas Bose-Einstein condensate. We focus on condensates with high enough densities such that a very rich sequence of multiple scattering events has to be taken into account. In our experiments, we generate superposition of two different momentum states and image the resulting scattering effects in time-of-flight imaging. Scattering between particles in the same or in different spin states can be induced. The experiments are accompanied by theoretical studies that develop a model taking scattering cascades into account. A surprising complexity of the dynamics is revealed even in conceptually simple experimental configurations.

*This work is supported by NSF under grants PHY-1912540 and PHY-2110158.

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Presenters

  • Annesh Mukhopadhyay

    • Washington State University
    • Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164-2814, USA

Authors

  • Annesh Mukhopadhyay

    • Washington State University
    • Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164-2814, USA

  • Md Kamrul Hoque Ome

    • Washington State Univ
    • Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164-2814, USA

  • Sean Mossman

    • Washington State Univ
    • Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164-2814, USA

  • Qingze Guan

    • Univ of Oklahoma
    • Center for Quantum Research and Technology, The University of Oklahoma, 440 W. Brooks Street, Norman, Oklahoma 73019, USA

  • Doerte Blume

    • University of Oklahoma
    • Homer L. Dodge Department of Physics and Astronomy, Center for Quantum Research and Technology, University of Oklahoma
    • The University of Oklahoma
    • Center for Quantum Research and Technology, The University of Oklahoma, 440 W. Brooks Street, Norman, Oklahoma 73019, USA

  • Peter W Engels

    • Washington State University
    • Washington State Univ
    • Department of Physics and Astronomy, Washington State University, Pullman, Washington
    • Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164-2814, USA