Double Species Bose-Einstein Condensate with Tunable Interspecies Interactions
Gregor ThalhammerLENS - European Laboratory for Non-Linear Spectroscopy and Dipartimento di Fisica, Università di Firenze, via N. Carrara 1, I-50019 Sesto Fiorentino - Firenze, ItalyGiovanni BarontiniLENS - European Laboratory for Non-Linear Spectroscopy and Dipartimento di Fisica, Università di Firenze, via N. Carrara 1, I-50019 Sesto Fiorentino - Firenze, ItalyL. De SarloLENS - European Laboratory for Non-Linear Spectroscopy and Dipartimento di Fisica, Università di Firenze, via N. Carrara 1, I-50019 Sesto Fiorentino - Firenze, ItalyJacopo CataniCNR-INFM, via G. Sansone 1, I-50019 Sesto Fiorentino - Firenze, ItalyF. MinardiCNR-INFM, via G. Sansone 1, I-50019 Sesto Fiorentino - Firenze, ItalyM. InguscioCNR-INFM, via G. Sansone 1, I-50019 Sesto Fiorentino - Firenze, Italy
2008en
ABI
Аннотация
We produce Bose-Einstein condensates of two different species, 87Rb and 41K, in an optical dipole trap in proximity of interspecies Feshbach resonances. We discover and characterize two Feshbach resonances, located around 35 and 79 G, by observing the three-body losses and the elastic cross section. The narrower resonance is exploited to create a double species condensate with tunable interactions. Our system opens the way to the exploration of double species Mott insulators and, more in general, of the quantum phase diagram of the two-species Bose-Hubbard model.
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