Publisher： IOP Publishing
E-ISSN： 1361-6455|49|1|15302-15307
ISSN： 0953-4075
Source： Journal of Physics B: Atomic, Molecular and Optical Physics, Vol.49, Iss.1, 2016-01, pp. : 15302-15307
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Abstract
We have realized a dual-species Bose–Einstein condensate (BEC) of 23Na and 87Rb atoms and observed its immiscibility. Because of the favorable background intra- and inter-species scattering lengths, stable condensates can be obtained via efficient evaporative cooling and sympathetic cooling without the need for fine tuning of the interactions. Our system thus provides a clean platform for studying inter-species interactions–driven effects in superfluid mixtures. With a Feshbach resonance, we have successfully created double BECs with largely tunable inter-species interactions and studied the miscible–immiscible phase transition.
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