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arXiv · 1404.6028

Advances in precision contrast interferometry with Yb Bose-Einstein condensates

Alan O. Jamison·Benjamin Plotkin-Swing·Subhadeep Gupta
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Abstract

Using a three-path contrast interferometer (CI) geometry and laser-pulse diffraction gratings, we create the first matter-wave interferometer with ytterbium (Yb) atoms. We present advances in contrast interferometry relevant to high-precision measurements. By comparing to a traditional atom interferometer, we demonstrate the immunity of the CI to vibrations for long interaction times (> 20 ms). We characterize and demonstrate control over the two largest systematic effects for a high-precision measurement of the fine structure constant via photon recoil with our interferometer: diffraction phases and atomic interactions. Diffraction phases are an important systematic for most interferometers using large-momentum transfer beam splitters; atomic interactions are a key concern for any BEC interferometer. Finally, we consider the prospects for a future sub-part per billion photon recoil measurement using a Yb CI.

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Alan O. Jamison, Benjamin Plotkin-Swing, Subhadeep Gupta. 2014-11-03. Advances in precision contrast interferometry with Yb Bose-Einstein condensates. https://doi.org/10.1103/physreva.90.063606

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