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arXiv · 2303.07004

Incommensurable matter-wave jets in quasi-1D geometry

Tadej Mežnaršič·Rok Žitko·Katja Gosar·Jure Pirman·Katja Arh·Matevž Jug·Erik Zupanič·Peter Jeglič
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Abstract

Matter-wave jets are ejected from a Bose-Einstein condensate subjected to a modulation of the interaction strength. For sufficiently strong modulation additional higher harmonic matter-wave jets emerge. Here we report the first experimental observation of incommensurable "golden" $\frac{1+\sqrt{5}}{2}$ matter-wave jets in a Bose-Einstein condensate exposed to a single frequency interaction modulation. We study the formation of higher-order jets and the corresponding incommensurable density waves in quasi-one-dimensional geometry with numerical one dimensional (1D) Gross-Pitaevskii equation simulation. We explore the process of jet formation experimentally and theoretically for a wide range of modulation amplitudes and frequencies and establish a phase diagram delineating different regimes of jet formation.

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Tadej Mežnaršič, Rok Žitko, Katja Gosar, Jure Pirman, Katja Arh, Matevž Jug, Erik Zupanič, Peter Jeglič. 2023-03-13. Incommensurable matter-wave jets in quasi-1D geometry. https://arxiv.org/abs/2303.07004

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