Trapping of Bose-Einstein condensates in a three-dimensional dark focus generated by conical refraction
نویسندگان
چکیده
We present a novel type of three-dimensional dark focus optical trapping potential for ultracold atoms and Bose-Einstein condensates. This ‘optical bottle’ is created with blue-detuned laser light exploiting the phenomenon of conical refraction occurring in biaxial crystals. We present experiments on confining a Rb Bose-Einstein condensate in this potential and derive the trapping frequencies and potential barriers under the harmonic approximation and the conical refraction theory.
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