SAMOP 2023 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 13: Ultra-cold Atoms, Ions and BEC I (joint session A/Q)
Q 13.3: Vortrag
Montag, 6. März 2023, 17:45–18:00, F303
Observation of vortices and vortex stripes in a dipolar BEC of Dysprosium — •Lauritz Klaus1, 2, Thomas Bland1, 2, Elena Poli2, Claudia Politi1,2, Giacomo Lamporesi3, Eva Casotti1,2, Russell Bisset2, Manfred Mark1,2, and Francesca Ferlaino1,2 — 1Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Innsbruck, Austria — 2Institut für Experimentalphysik, Universität Innsbruck, Austria — 3INO-CNR BEC Center and Dipartimento di Fisica, Università di Trento, Italy
Quantized vortices are a defining feature of superfluid systems under rotation and have been extensively investigated in ultracold atom experiments with isotropic contact interactions. However, they have never been observed in dipolar quantum gases. We here report on the creation of vortices in a strongly magnetic Bose-Einstein-Condensate (BEC) of 162Dy atoms. We are imparting angular momentum to the BEC by the means of magnetostirring, a novel technique making use of the alignment of the dipolar atoms along the rotating magnetic field. We show that for a critical rotation frequency, the dipolar BEC starts to nucleate vortices and that the vortices arrange in stripes along the direction of the magnetic field during the rotations. The next key step will be extending the concept of magnetostirring to the recently observed supersolid states and study the vortex formation in this very exotic state of quantum matter.