Production of a dual-species Bose-Einstein condensate of Rb and Cs atoms

We report the simultaneous production of Bose-Einstein condensates (BECs) of 87 Rb and 133 Cs atoms in separate optical traps. The two samples are mixed during laser cooling and loading but are separated by 400 μ m for the final stage of evaporative cooling. This is done to avoid considerable inters...

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Bibliographic Details
Published in:The European physical journal. D, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2011-11, Vol.65 (1-2), p.3-9
Main Authors: Lercher, A. D., Takekoshi, T., Debatin, M., Schuster, B., Rameshan, R., Ferlaino, F., Grimm, R., Nägerl, H. -C.
Format: Article
Language:English
Subjects:
Applications of Nonlinear Dynamics and Chaos Theory
Atomic
Bose-Einstein condensates
Evaporative
Evaporative cooling
Ground state
Heating
Laser cooling
Molecular
Optical and Plasma Physics
Optical traps
Phase transformations
Physical Chemistry
Physics
Physics and Astronomy
Quantum Information Technology
Quantum Physics
Regular Article
Spectroscopy/Spectrometry
Spintronics
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Summary:We report the simultaneous production of Bose-Einstein condensates (BECs) of 87 Rb and 133 Cs atoms in separate optical traps. The two samples are mixed during laser cooling and loading but are separated by 400 μ m for the final stage of evaporative cooling. This is done to avoid considerable interspecies three-body recombination, which causes heating and evaporative loss. We characterize the BEC production process, discuss limitations, and outline the use of the dual-species BEC in future experiments to produce rovibronic ground state molecules, including a scheme facilitated by the superfluid-to-Mott-insulator (SF-MI) phase transition.
ISSN:1434-6060
1434-6079
DOI:10.1140/epjd/e2011-20015-6