Noschang Kuhn, CarlosMcDonald, GordonHardman, KyleBennetts, ShayneEveritt, PatrickAltin, PaulDebs, JohnClose, JohnRobins, Nicholas2015-12-131367-2630http://hdl.handle.net/1885/74317This paper presents the first realization of a simultaneous 87Rb-85Rb Mach-Zehnder atom interferometer with Bose-condensed atoms. A number of ambitious proposals for precise terrestrial and space based tests of the weak equivalence principle rely on suchAuthor/s retain copyright201410.1088/1367-2630/16/7/0730352015-12-11