Loss features in ultracold <math><mmultiscripts><mi>Dy</mi><mprescripts/><none/><mn>162</mn></mmultiscripts></math> gases: Two- versus three-body processes
LECOMTE, Maxime
Laboratoire Kastler Brossel [LKB [Collège de France]]
Collège de France - Chaire Atomes et rayonnement
Laboratoire Kastler Brossel [LKB [Collège de France]]
Collège de France - Chaire Atomes et rayonnement
JOURNEAUX, Alexandre
Laboratoire Kastler Brossel [LKB [Collège de France]]
Collège de France - Chaire Atomes et rayonnement
Laboratoire Kastler Brossel [LKB [Collège de France]]
Collège de France - Chaire Atomes et rayonnement
RENAUD, Loan
Laboratoire Kastler Brossel [LKB [Collège de France]]
Collège de France - Chaire Atomes et rayonnement
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Laboratoire Kastler Brossel [LKB [Collège de France]]
Collège de France - Chaire Atomes et rayonnement
LECOMTE, Maxime
Laboratoire Kastler Brossel [LKB [Collège de France]]
Collège de France - Chaire Atomes et rayonnement
Laboratoire Kastler Brossel [LKB [Collège de France]]
Collège de France - Chaire Atomes et rayonnement
JOURNEAUX, Alexandre
Laboratoire Kastler Brossel [LKB [Collège de France]]
Collège de France - Chaire Atomes et rayonnement
Laboratoire Kastler Brossel [LKB [Collège de France]]
Collège de France - Chaire Atomes et rayonnement
RENAUD, Loan
Laboratoire Kastler Brossel [LKB [Collège de France]]
Collège de France - Chaire Atomes et rayonnement
Laboratoire Kastler Brossel [LKB [Collège de France]]
Collège de France - Chaire Atomes et rayonnement
LOPES, Raphael
Laboratoire Kastler Brossel [LKB [Collège de France]]
Collège de France - Chaire Atomes et rayonnement
Laboratoire Kastler Brossel [LKB [Collège de France]]
Collège de France - Chaire Atomes et rayonnement
DALIBARD, Jean
Collège de France - Chaire Atomes et rayonnement
Laboratoire Kastler Brossel [LKB [Collège de France]]
< Réduire
Collège de France - Chaire Atomes et rayonnement
Laboratoire Kastler Brossel [LKB [Collège de France]]
Langue
en
Article de revue
Ce document a été publié dans
Physical Review A. 2024, vol. 109, n° 2, p. 023319
American Physical Society
Résumé en anglais
Dipolar gases like erbium and dysprosium have a dense spectrum of resonant loss features associated with their strong anisotropic interaction potential. These resonances display various behaviors with density and temperature, ...Lire la suite >
Dipolar gases like erbium and dysprosium have a dense spectrum of resonant loss features associated with their strong anisotropic interaction potential. These resonances display various behaviors with density and temperature, implying diverse microscopic properties. Here we quantitatively investigate the low-field (<math><mrow><mi>B</mi><mo><</mo><mn>6</mn><mspace width="0.16em"/><mi mathvariant="normal">G</mi></mrow></math>) loss features in ultracold thermal samples of <math><mmultiscripts><mi mathvariant="normal">Dy</mi><mprescripts/><none/><mrow><mn>162</mn></mrow></mmultiscripts></math>. The atoms are spin polarized in their lowest internal state so that pure two-body losses due to spin relaxation are forbidden. However, our analysis reveals that some resonances lead to a two-body-like decay law, while others show the expected three-body decay. We present microscopic one-step and two-step models for these losses, investigate their temperature dependence, and detect a feature compatible with a <math><mi>d</mi></math>-wave Fano-Feshbach resonance that has not been observed before. We also report the variation of the scattering length around these resonances, inferred from the time-of-flight expansion of the condensate.< Réduire
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