Towards a Dual Species BEC in NaRb

Multi-species mixtures of ultracold atoms are currently being studied intensively. The areas of focus include, but are not limited to condensed matter and quantum statistical effects, interaction-tuning by photo- and magneto-association, production of (degenerate) ultracold molecules, and so on. In the specific case of NaRb, predictions exist regarding Feshbach resonances [1], miscibility [2] and macroscopic quantum transitions [3]. We describe progress towards integrating Rb into our existing Na BEC set-up, including the design and implementation of a dual species oven. \newline 1. M. Bhattacharya \textit{et al.,} Eur.Phys.J.D. \textbf{31}, 301(2004). \newline 2. S.B.Weiss \textit{et al}, Phys.Rev. A,\textbf{68},042708(2003). \newline 3. H.Pu \textit{et al}, Phys.Rev.Lett \textbf{80},1134 (1998).