We produce Bose-Einstein condensates of 162Dy atoms employing an innovative technique based on a resonator-enhanced optical trap that allows efficient loading from the magneto-optical trap. We characterize the scattering properties of the ultracold atoms for magnetic fields between 6 and 30 G. In addition to the typical chaotic distribution of narrow Feshbach resonances in lanthanides, we discover two rather isolated broad features at around 22 G and 27 G. A characterization using the complementary measurements of losses, thermalization, anisotropic expansion, and molecular binding energy points towards resonances of predominant s-wave character. Such resonances will ease the investigation of quantum phenomena relying on the interplay between dipole and contact interactions.
Dysprosium dipolar Bose-Einstein condensate with broad Feshbach resonances / E. Lucioni, L. Tanzi, A. Fregosi, J. Catani, S. Gozzini, M. Inguscio, A. Fioretti, C. Gabbanini, and G. Modugno. - In: PHYSICAL REVIEW A. - ISSN 2469-9926. - ELETTRONICO. - 97:(2018), pp. 0-0. [10.1103/PhysRevA.97.060701]
Dysprosium dipolar Bose-Einstein condensate with broad Feshbach resonances
E. Lucioni
;L. Tanzi;FREGOSI, AGATA;J. Catani;GOZZINI, SIMONA;M. Inguscio;FIORETTI, ANDREA;and G. Modugno
2018
Abstract
We produce Bose-Einstein condensates of 162Dy atoms employing an innovative technique based on a resonator-enhanced optical trap that allows efficient loading from the magneto-optical trap. We characterize the scattering properties of the ultracold atoms for magnetic fields between 6 and 30 G. In addition to the typical chaotic distribution of narrow Feshbach resonances in lanthanides, we discover two rather isolated broad features at around 22 G and 27 G. A characterization using the complementary measurements of losses, thermalization, anisotropic expansion, and molecular binding energy points towards resonances of predominant s-wave character. Such resonances will ease the investigation of quantum phenomena relying on the interplay between dipole and contact interactions.File | Dimensione | Formato | |
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