paper

A Bose-condensed, simultaneous dual species Mach-Zehnder atom interferometer

arXiv:1401.5827 · doi:10.1088/1367-2630/16/7/073035

Abstract

This paper presents the first realisation of a simultaneous Rb -Rb 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 such a system. This implementation utilises hybrid magnetic-optical trapping to produce spatially overlapped condensates with a duty cycle of 20s. A horizontal optical waveguide with co-linear Bragg beamsplitters and mirrors is used to simultaneously address both isotopes in the interferometer. We observe a non-linear phase shift on a non-interacting Rb interferometer as a function of interferometer time, , which we show arises from inter-isotope scattering with the co-incident Rb interferometer. A discussion of implications for future experiments is given.

7 pages, 5 figures. The authors welcome comments and feedback on this manuscript

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