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American Physical Society, Physical Review A, 5(91), 2015

DOI: 10.1103/physreva.91.053623

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Symmetric microwave potentials for interferometry with thermal atoms on a chip

Journal article published in 2015 by M. Ammar, Ammar Mahdi, Matthieu Dupont-Nivet, Landry Huet, Jean-Paul Pocholle, Peter Rosenbusch, Isabelle Bouchoule, Christoph I. Westbrook, Jerome Esteve ORCID, Jakob Reichel, Christine Guerlin, Sylvain Schwartz
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This paper is available in a repository.

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Abstract

A trapped atom interferometer involving state-selective adiabatic potentials with two microwave frequencies on a chip is proposed. We show that this configuration provides a way to achieve a high degree of symmetry between the two arms of the interferometer, which is necessary for coherent splitting and recombination of thermal (i.e., noncondensed) atoms. The resulting interferometer holds promise to achieve high contrast and long coherence time, while avoiding the mean-field interaction issues of interferometers based on trapped Bose-Einstein condensates.