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Cold Lithium Atom Interferometer

Kayleigh Cassella, Eric Copenhaver, Chen Lai +4 more

Bulletin of the American Physical SocietyJun 11, 20150 citations

Atom interferometry experiments with lithium atom

Marion Jacquey, J. Vigué

Jan 1, 20060 citations

Lithium atom interferometer using laser diffraction : description and experiments

Alain Miffre, Marion Jacquey, M Büchner +2 more

We have built and operated an atom interferometer of the Mach-Zehnder type. The atomic wave is a supersonic beam of lithium seeded in argon and the mirrors and beam-splitters for the atomic wave are based on elastic Bragg diffraction on laser standing waves at 671 nm. We give here a detailed description of our experimental setup and of the procedures used to align its components. We then present experimental signals, exhibiting atomic interference effects with a very high visibility, up to 84.5 %. We describe a series of experiments testing the sensitivity of the fringe visibility to the main alignment defects and to the magnetic field gradient.We have built and operated an atom interferometer of the Mach-Zehnder type. The atomic wave is a supersonic beam of lithium seeded in argon and the mirrors and beam-splitters for the atomic wave are based on elastic Bragg diffraction on laser standing waves at 671 nm. We give here a detailed description of our experimental setup and of the procedures used to align its components. We then present experimental signals, exhibiting atomic interference effects with a very high visibility, up to 84.5 %. We describe a series of experiments testing the sensitivity of the fringe visibility to the main alignment defects and to the magnetic field gradient.

Oct 22, 200421 citations

High contrast Mach-Zehnder lithium atom interferometer in the Bragg regime

R. Delhuille, C. Champenois, M Büchner +4 more

We have constructed an atom interferometer of the Mach-Zehnder type, operating with a thermal lithium beam. Atom diffraction uses Bragg diffraction on laser standing waves. With first order diffraction, our apparatus has given a large signal and a very good fringe contrast (74%, which we believe to be the highest ever observed with atom interferometers. This apparatus will be applied to high sensitivity measurements

Nov 8, 200117 citations

Test of the isotopic and velocity selectivity of a lithium atom interferometer by magnetic dephasing

Marion Jacquey, Alain Miffre, M Büchner +2 more

A magnetic field gradient applied to an atom interferometer induces a M -dependent phase shift which results in a series of decays and revivals of the fringe visibility. Using our lithium atom interferometer based on Bragg laser diffraction, we have measured the fringe visibility as a function of the applied gradient. We have thus tested the isotopic selectivity of the interferometer, the velocity selective character of Bragg diffraction for different diffraction orders as well as the effect of optical pumping of the incoming atoms. All these observations are qualitatively understood but a quantitative analysis requires a complete model of the interferometer.A magnetic field gradient applied to an atom interferometer induces a M -dependent phase shift which results in a series of decays and revivals of the fringe visibility. Using our lithium atom interferometer based on Bragg laser diffraction, we have measured the fringe visibility as a function of the applied gradient. We have thus tested the isotopic selectivity of the interferometer, the velocity selective character of Bragg diffraction for different diffraction orders as well as the effect of optical pumping of the incoming atoms. All these observations are qualitatively understood but a quantitative analysis requires a complete model of the interferometer.

arXiv:quant-ph/0611185Europhysics Letters (EPL)Jan 1, 200713 citations

Optical pumping of a lithium atomic beam for atom interferometry

Jonathan Gillot, A. Gauguet, M Büchner +1 more

arXiv:1305.6727The European Physical Journal DDec 1, 201319 citations

Lithium atom interferometer using laser diffraction: description and experiments

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