Collisional and molecular spectroscopy in an ultracold Bose-Bose mixture

Year: 2009

Authors: Thalhammer G., Barontini G., Catani J., Rabatti F., Weber C., Simoni A., Minardi F., Inguscio M.

Autors Affiliation: LENS European Laboratory for Nonlinear Spectroscopy and Università di Firenze, Via N Carrara 1, 50019 Sesto Fiorentino, Italy;
CNR-INFM, Via G Sansone 1, 50019 Sesto Fiorentino, Italy;
Laboratoire de Physique des Atomes, Lasers, Molécules et Surfaces, UMR 6627 du CNRS and Université de Rennes, 35042 Rennes Cedex, France

Abstract: The route towards a Bose-Einstein condensate (BEC) of dipolar molecules requires the ability to efficiently associate dimers of different chemical species and transfer them to the stable rovibrational ground state. Here, we report on recent spectroscopic measurements of two weakly bound molecular levels and newly observed narrow d-wave Feshbach resonances. The data are used to improve the collisional model for the Bose-Bose mixture (KRb)-K-41-Rb-87, one of the most promising candidates to create a molecular dipolar BEC.


Volume: 11      Pages from: 055044  to: 055044

More Information: We acknowledge L De Sarlo and G Varoquaux for their contribution to the early stage of the experiment and all the members of the Quantum Degenerate Gases group in Florence for discussions. The CNR (EuroQUAM DQS, QUDIPMOL), Ente Cassa di Risparmio di Firenze, EU (STREP CHIMONO, NAMEQUAM) and INFN (SQUATSuper) are acknowledged for financial support.
KeyWords: Bose-Einstein condensates; Chemical species; D-wave Feshbach resonance; Dipolar molecules; Molecular levels; Spectroscopic measurements; Ultra-cold, Bose-Einstein condensation; Molecular spectroscopy; Oligomers; Steam condensers, Rubidium
DOI: 10.1088/1367-2630/11/5/055044

Citations: 16
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