Double Species Bose-Einstein Condensate with Tunable Interspecies Interactions

Journal Article · Fri May 30 04:00:00 EDT 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.100.210402· OSTI ID:21132458

Thalhammer, G; Barontini, G; De Sarlo, L ^[1]; Catani, J; Minardi, F; Inguscio, M ^[1]

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1. LENS - European Laboratory for Non-Linear Spectroscopy and Dipartimento di Fisica, Universita di Firenze, via N. Carrara 1, I-50019 Sesto Fiorentino - Firenze (Italy)

We produce Bose-Einstein condensates of two different species, {sup 87}Rb and {sup 41}K, 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.

• OSTI ID: 21132458
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 21 Vol. 100; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BOSE-EINSTEIN CONDENSATION
CROSS SECTIONS
DIPOLES
HUBBARD MODEL
PHASE DIAGRAMS
POTASSIUM 41
RESONANCE
RUBIDIUM 87
THREE-BODY PROBLEM